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- UNCONTROLLED CELL DIVISION
- SAME BASIC CAUSE
- MANY DIFFERENT DISEASES AS EACH TISSUE/CELL TYPE IS DIFFERENT WITH
REGARD TO WHICH GENES ARE EXPRESSED
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- MUTATION = A CHANGE IN THE NUCLEOTIDE SEQUENCE OF DNA
- MUTAGEN = A CHEMICAL OR PHYSICAL AGENT THAT CAUSES CELLS TO MUTATE
- CARCINOGEN = A CHEMICAL OR PHYSICAL AGENT THAT CAUSES CELLS TO BECOME
CANCEROUS
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- MALIGNANT TUMOR = AN ABNORMAL TISSUE MASS THAT CAN SPREAD INTO
NEIGHBORING TISSUE AND TO OTHER PARTS OF THE BODY USUALLY VIA THE LYMPH
OR BLOOD; A CANCEROUS TUMOR
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- BENIGN TUMOR = AN ABNORMAL MASS OF CELLS THAT REMAINS AT ITS ORGINIAL
SITE IN THE BODY
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- CELL DIFFERENTIATION = SPECIALIZATION IN THE STRUCTURE AND FUNCTION OF
CELLS. DIFFERENT CELL TYPES
EXPRESS DIFFERENT GENES AND THUS HAVE DIFFERENT STRUCTURES AND FUNCTIONS
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- TUMOR SUPPRESSOR GENE = A GENE WHOSE PRODUCT INHIBITS CELL DIVISION,
THEREBY PREVENTING UNCONTROLLED CELL GROWTH
- ONCOGENE = A CANCER-CAUSING GENE; USUALLY CONTRIBUTES TO MALIGNANCY BY
ABNORMALLY ENHANCING THE AMOUNT OR ACTIVITY OF A GROWTH FACTOR MADE BY
THE CELL
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- Risk
- About 207,000 new cases each year, 50,000 deaths
- About 1 in 9 women on average
- At age 20 = 1 in 2500
- At age 60 = 1 in 28
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- Inherited Breast Cancer
- About 10% of cases are caused by inheritance of a faulty
- gene
- If mother had it, risk is 1.8 times higher, 2.3 times if sister,
2.5 times if both
- BRCA1 (chromosome 17) codes for tumor suppressor protein protects
against ovarian and breast cancer
- BRCA2 (chromosome 13) associated with breast, not ovarian cancer
- One good copy could become flawed due to environmental mutagen
- May develop breast cancer even if both genes are normal
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- Noninherited Breast Cancer
- Complex and difficult to determine relationship between all factors
involved
- Sum of lifetime exposure to estrogen appears to increase risk
- ˝ of breast cancers are estrogen dependent
- More cycles = greater risk (“Western women”)
- Women who have child before 30 are at lower risk than nulliparous women
- Some plant alkaloids are protective (broccoli), beta carotene (vitamin
A), olive oil
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- Detection
- Changes in breast that persist: lump, swelling, thickening,
- skin irritation, nipple discharge or pain
- Should perform breast self exams once a month after age 20
- Mammogram = x-ray of breasts to pick up small lumps
- Clinical exam and baseline mammogram every 3 years for women aged 20 to
40
- Clinical exam and baseline mammogram every 1 to 2 years for women aged
35 to 40
- Clinical exam and baseline mammogram once per year for women aged 50 or
older
- New computerized and electrical conduction tests may increase accuracy
of detection
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- Surgical Treatments
- Simple Mastectomy = surgical removal of breast
- Modified Radical Mastectomy = surgical removal of breast and
surrounding lymph nodes
- Radical Mastectomy = surgical removal of breast, axillary lymph nodes
and underlying pectoralis
major muscle.
- Partial Mastectomy (lumpectomy) = removal of a portion of the breast
when combined with radiation or chemotherapy may be as effective as the
more radical surgical techniques
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29
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30
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- Look for any changes or abnormalities in pigmented skin regions or moles
- A = Asymmetrical or uneven
- B = Border; irregular
- C = Color; mottled or showing
dark red patches of color
- D = Diameter; larger than pencil
eraser could potentially be cancerous
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- Tumors can be benign or malignant:
- Benign tumors are not cancer:
- Benign tumors are rarely life-threatening.
- Generally, benign tumors can be removed. They usually do not grow back.
- Benign tumors do not invade the tissues around them.
- Cells from benign tumors do not spread to other parts of the body.
- Malignant tumors are cancer:
- Malignant tumors are generally more serious than benign tumors. They
may be life-threatening.
- Malignant tumors often can be removed. But sometimes they grow back.
- Malignant tumors can invade and damage nearby tissues and organs.
- Cells from malignant tumors can spread to other parts of the body.
Cancer cells spread by breaking away from the original (primary) tumor
and entering the lymphatic system or bloodstream. The cells invade
other organs and form new tumors that damage these organs. The spread
of cancer is called metastasis.
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- Definition of breast cancer: Cancer that forms in tissues of the breast,
usually the ducts (tubes that carry milk to the nipple) and lobules
(glands that make milk). It occurs in both men and women, although male
breast cancer is rare.
- Estimated new cases and deaths from breast cancer in the United States
in 2007:
New cases: 178,480 (female); 2,030 (male) Deaths: 40,460
(female); 450 (male)
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- Studies have found the following risk factors for breast cancer:
- Age: The chance of getting breast cancer goes up as a woman gets older.
Most cases of breast cancer occur in women over 60. This disease is not
common before menopause.
- Personal history of breast cancer: A woman who had breast cancer in one
breast has an increased risk of getting cancer in her other breast.
- Family history: A woman's risk of breast cancer is higher if her mother,
sister, or daughter had breast cancer. The risk is higher if her family
member got breast cancer before age 40. Having other relatives with
breast cancer (in either her mother's or father's family) may also
increase a woman's risk.
- Certain breast changes: Some women have cells in the breast that look
abnormal under a microscope. Having certain types of abnormal cells (atypical
hyperplasia and lobular carcinoma in situ [LCIS]) increases the risk of
breast cancer.
- Gene changes: Changes in certain genes increase the risk of breast
cancer. These genes include BRCA1, BRCA2, and others. Tests can
sometimes show the presence of specific gene changes in families with
many women who have had breast cancer. Health care providers may suggest
ways to try to reduce the risk of breast cancer, or to improve the
detection of this disease in women who have these changes in their
genes. NCI offers publications on gene testing.
- Race: Breast cancer is diagnosed more often in white women than Latina,
Asian, or African American women.
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- Reproductive and menstrual history:
- The older a woman is when she has her first child, the greater her
chance of breast cancer.
- Women who had their first menstrual period before age 12 are at an
increased risk of breast cancer.
- Women who went through menopause after age 55 are at an increased risk
of breast cancer.
- Women who never had children are at an increased risk of breast cancer.
- Women who take menopausal hormone therapy with estrogen plus progestin
after menopause also appear to have an increased risk of breast cancer.
- Large, well-designed studies have shown no link between abortion or
miscarriage and breast cancer.
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- Radiation therapy to the chest: Women who had radiation therapy to the
chest (including breasts) before age 30 are at an increased risk of
breast cancer. This includes women treated with radiation for Hodgkin's
lymphoma. Studies show that the younger a woman was when she received
radiation treatment, the higher her risk of breast cancer later in life.
- Breast density: Breast tissue may be dense or fatty. Older women whose mammograms
(breast x-rays) show more dense tissue are at increased risk of breast
cancer.
- Taking DES (diethylstilbestrol): DES was given to some pregnant women in
the United States between about 1940 and 1971. (It is no longer given to
pregnant women.) Women who took DES during pregnancy may have a slightly
increased risk of breast cancer. The possible effects on their daughters
are under study.
- Being overweight or obese after menopause: The chance of getting breast
cancer after menopause is higher in women who are overweight or obese.
- Lack of physical activity: Women who are physically inactive throughout
life may have an increased risk of breast cancer. Being active may help
reduce risk by preventing weight gain and obesity.
- Drinking alcohol: Studies suggest that the more alcohol a woman drinks,
the greater her risk of breast cancer.
- Other possible risk factors are under study. Researchers are studying
the effect of diet, physical activity, and genetics on breast cancer
risk. They are also studying whether certain substances in the
environment can increase the risk of breast cancer.
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- Screening Mammogram
- To find breast cancer early, NCI recommends that:
- Women in their 40s and older should have mammograms every 1 to 2 years.
A mammogram is a picture of the breast made with x-rays.
- Women who are younger than 40 and have risk factors for breast cancer
should ask their health care provider whether to have mammograms and how
often to have them.
- Mammograms can often show a breast lump before it can be felt. They also
can show a cluster of tiny specks of calcium. These specks are called microcalcifications.
Lumps or specks can be from cancer, precancerous cells, or other
conditions. Further tests are needed to find out if abnormal cells are
present.
- If an abnormal area shows up on your mammogram, you may need to have
more x-rays. You also may need a biopsy. A biopsy is the only way to
tell for sure if cancer is present. (The "Diagnosis" section
has more information on biopsy.)
- Mammograms are the best tool doctors have to find breast cancer early.
However, mammograms are not perfect:
- A mammogram may miss some cancers. (The result is called a "false
negative.")
- A mammogram may show things that turn out not to be cancer. (The result
is called a "false positive.")
- Some fast-growing tumors may grow large or spread to other parts of the
body before a mammogram detects them.
- Mammograms (as well as dental x-rays, and other routine x-rays) use very
small doses of radiation. The risk of any harm is very slight, but
repeated x-rays could cause problems. The benefits nearly always
outweigh the risk. You should talk with your health care provider about
the need for each x-ray. You should also ask for shields to protect
parts of your body that are not in the picture.
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- Clinical Breast Exam
- During a clinical breast exam, your health care provider checks your
breasts. You may be asked to raise your arms over your head, let them
hang by your sides, or press your hands against your hips.
- Your health care provider looks for differences in size or shape between
your breasts. The skin of your breasts is checked for a rash, dimpling,
or other abnormal signs. Your nipples may be squeezed to check for
fluid.
- Using the pads of the fingers to feel for lumps, your health care
provider checks your entire breast, underarm, and collarbone area. A
lump is generally the size of a pea before anyone can feel it. The exam
is done on one side, then the other. Your health care provider checks
the lymph nodes near the breast to see if they are enlarged.
- A thorough clinical breast exam may take about 10 minutes.
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- Breast Self-Exam
- You may perform monthly breast self-exams to check for any changes in
your breasts. It is important to remember that changes can occur because
of aging, your menstrual cycle, pregnancy, menopause, or taking birth
control pills or other hormones. It is normal for breasts to feel a
little lumpy and uneven. Also, it is common for your breasts to be
swollen and tender right before or during your menstrual period.
- You should contact your health care provider if you notice any unusual
changes in your breasts.
- Breast self-exams cannot replace regular screening mammograms and
clinical breast exams. Studies have not shown that breast self-exams
alone reduce the number of deaths from breast cancer.
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- Common symptoms of breast cancer include:
- A change in how the breast or nipple feels
- A lump or thickening in or near the breast or in the underarm area
- Nipple tenderness
- A change in how the breast or nipple looks
- A change in the size or shape of the breast
- A nipple turned inward into the breast
- The skin of the breast, areola, or nipple may be scaly, red, or
swollen. It may have ridges or pitting so that it looks like the skin
of an orange.
- Nipple discharge (fluid)
- Early breast cancer usually does not cause pain. Still, a woman should
see her health care provider about breast pain or any other symptom that
does not go away. Most often, these symptoms are not due to cancer.
Other health problems may also cause them. Any woman with these symptoms
should tell her doctor so that problems can be diagnosed and treated as
early as possible.
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- Diagnosis
- If you have a symptom or screening test result that suggests cancer,
your doctor must find out whether it is due to cancer or to some other
cause. Your doctor may ask about your personal and family medical
history. You may have a physical exam. Your doctor also may order a
mammogram or other imaging procedure. These tests make pictures of
tissues inside the breast. After the tests, your doctor may decide no
other exams are needed. Your doctor may suggest that you have a
follow-up exam later on. Or you may need to have a biopsy to look for
cancer cells.
- Clinical Breast Exam
- Your health care provider feels each breast for lumps and looks for
other problems. If you have a lump, your doctor will feel its size,
shape, and texture. Your doctor will also check to see if it moves
easily. Benign lumps often feel different from cancerous ones. Lumps
that are soft, smooth, round, and movable are likely to be benign. A
hard, oddly shaped lump that feels firmly attached within the breast is
more likely to be cancer.
- Diagnostic Mammogram
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- Diagnostic mammograms are x-ray pictures of the breast. They take
clearer, more detailed images of areas that look abnormal on a screening
mammogram. Doctors use them to learn more about unusual breast changes,
such as a lump, pain, thickening, nipple discharge, or change in breast
size or shape. Diagnostic mammograms may focus on a specific area of the
breast. They may involve special techniques and more views than
screening mammograms.
- Ultrasound
- An ultrasound device sends out sound waves that people cannot hear. The
waves bounce off tissues. A computer uses the echoes to create a
picture. Your doctor can view these pictures on a monitor. The pictures
may show whether a lump is solid or filled with fluid. A cyst is a
fluid-filled sac. Cysts are not cancer. But a solid mass may be cancer.
After the test, your doctor can store the pictures on video or print
them out. This exam may be used along with a mammogram.
- Magnetic Resonance Imaging
- Magnetic resonance imaging (MRI) uses a powerful magnet linked to a
computer. MRI makes detailed pictures of breast tissue. Your doctor can
view these pictures on a monitor or print them on film. MRI may be used
along with a mammogram.
- Biopsy
- Your doctor may refer you to a surgeon or breast disease specialist for
a biopsy. Fluid or tissue is removed from your breast to help find out
if there is cancer.
- Some suspicious areas can be seen on a mammogram but cannot be felt
during a clinical breast exam. Doctors can use imaging procedures to
help see the area and remove tissue. Such procedures include ultrasound-guided,
needle-localized, or stereotactic biopsy.
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- Doctors can remove tissue from the breast in different ways:
- Fine-needle aspiration: Your doctor uses a thin needle to remove fluid
from a breast lump. If the fluid appears to contain cells, a pathologist
at a lab checks them for cancer with a microscope. If the fluid is
clear, it may not need to be checked by a lab.
- Core biopsy: Your doctor uses a thick needle to remove breast tissue. A
pathologist checks for cancer cells. This procedure is also called a
needle biopsy.
- Surgical biopsy: Your surgeon removes a sample of tissue. A pathologist
checks the tissue for cancer cells.
- An incisional biopsy takes a sample of a lump or abnormal area.
- An excisional biopsy takes the entire lump or area.
- If cancer cells are found, the pathologist can tell what kind of cancer
it is. The most common type of breast cancer is ductal carcinoma.
Abnormal cells are found in the lining of the ducts. Lobular carcinoma
is another type. Abnormal cells are found in the lobules.
- If you are diagnosed with cancer, your doctor may order special lab
tests on the breast tissue that was removed. These tests help your
doctor learn more about the cancer and plan treatment:
- Hormone receptor test: This test shows whether the tissue has certain
hormone receptors. Tissue with these receptors needs hormones (estrogen
or progesterone) to grow.
- HER2 test: This test shows whether the tissue has a protein called human
epidermal growth factor receptor-2 (HER2) or the HER2/neu gene. Having
too much protein or too many copies of the gene in the tissue may
increase the chance that the breast cancer will come back after
treatment.
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- These are the stages of breast cancer:
- Stage 0 is carcinoma in situ.
- Lobular carcinoma in situ (LCIS): Abnormal cells are in the lining of a
lobule. (See picture of lobule on page 3.) LCIS seldom becomes invasive
cancer. However, having LCIS in one breast increases the risk of cancer
for both breasts.
- Ductal carcinoma in situ (DCIS): Abnormal cells are in the lining of a
duct. DCIS is also called intraductal carcinoma. The abnormal cells
have not spread outside the duct. They have not invaded the nearby
breast tissue. DCIS sometimes becomes invasive cancer if not treated.
- Stage I is an early stage of invasive breast cancer. The tumor is no
more than 2 centimeters (three-quarters of an inch) across. Cancer cells
have not spread beyond the breast.
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- Stage II is one of the following:
- The tumor is no more than 2 centimeters (three-quarters of an inch)
across. The cancer has spread to the lymph nodes under the arm.
- The tumor is between 2 and 5 centimeters (three-quarters of an inch to
2 inches). The cancer has not spread to the lymph nodes under the arm.
- The tumor is between 2 and 5 centimeters (three-quarters of an inch to
2 inches). The cancer has spread to the lymph nodes under the arm
- The tumor is larger than 5 centimeters (2 inches). The cancer has not
spread to the lymph nodes under the arm.
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- Stage III is locally advanced cancer. It is divided into Stage IIIA,
IIIB, and IIIC.
- Stage IIIA is one of the following:
- The tumor is no more than 5 centimeters (2 inches) across. The cancer
has spread to underarm lymph nodes that are attached to each other or
to other structures. Or the cancer may have spread to lymph nodes
behind the breastbone.
- The tumor is more than 5 centimeters across. The cancer has spread to
underarm lymph nodes that are either alone or attached to each other
or to other structures. Or the cancer may have spread to lymph nodes
behind the breastbone.
- Stage IIIB is a tumor of any size that has grown into the chest wall or
the skin of the breast. It may be associated with swelling of the
breast or with nodules (lumps) in the breast skin.
- The cancer may have spread to lymph nodes under the arm.
- The cancer may have spread to underarm lymph nodes that are attached
to each other or other structures. Or the cancer may have spread to
lymph nodes behind the breastbone.
- Inflammatory breast cancer is a rare type of breast cancer. The breast
looks red and swollen because cancer cells block the lymph vessels in
the skin of the breast. When a doctor diagnoses inflammatory breast
cancer, it is at least Stage IIIB, but it could be more advanced.
- Stage IIIC is a tumor of any size. It has spread in one of the
following ways:
- The cancer has spread to the lymph nodes behind the breastbone and
under the arm.
- The cancer has spread to the lymph nodes above or below the
collarbone.
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- Stage IV is distant metastatic cancer. The cancer has spread to other
parts of the body.
- Recurrent cancer is cancer that has come back (recurred) after a period
of time when it could not be detected. It may recur locally in the
breast or chest wall. Or it may recur in any other part of the body,
such as the bone, liver, or lungs.
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- Definition of cervical cancer: Cancer that forms in tissues of the
cervix (the organ connecting the uterus and vagina). It is usually a
slow-growing cancer that may not have symptoms but can be found with
regular Pap tests (a procedure in which cells are scraped from the
cervix and looked at under a microscope).
Estimated new cases and deaths from cervical (uterine cervix)
cancer in the United States in 2007:
New cases: 11,150 Deaths: 3,670
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- Studies have found a number of factors that may increase the risk of
cervical cancer. These factors may act together to increase the risk
even more:
- Human papillomaviruses (HPVs): HPV infection is the main risk factor for
cervical cancer. HPV is a group of viruses that can infect the cervix.
HPV infections are very common. These viruses can be passed from person
to person through sexual contact. Most adults have been infected with
HPV at some time in their lives. Some types of HPV can cause changes to
cells in the cervix. These changes can lead to genital warts, cancer,
and other problems. Doctors may check for HPV even if there are no warts
or other symptoms.
- If a woman has an HPV infection, her doctor can discuss ways to avoid
infecting other people. The Pap test can detect cell changes in the
cervix caused by HPV. (See the "Screening" section to learn
more about the Pap test.) Treatment of these cell changes can prevent
cervical cancer. There are several treatment methods, including freezing
or burning the infected tissue. Sometimes medicine also helps.
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- The NCI offers a fact sheet called "Human Papillomaviruses and
Cancer: Questions and Answers."
- Lack of regular Pap tests: Cervical cancer is more common among women
who do not have regular Pap tests. The Pap test helps doctors find precancerous
cells. Treating precancerous cervical changes often prevents cancer.
- Weakened immune system (the body's natural defense system): Women with HIV
(the virus that causes AIDS) infection or who take drugs that suppress
the immune system have a higher-than-average risk of developing cervical
cancer. For these women, doctors suggest regular screening for cervical
cancer.
- Age: Cancer of the cervix occurs most often in women over the age of 40.
- Sexual history: Women who have had many sexual partners have a
higher-than-average risk of developing cervical cancer. Also, a woman
who has had sexual intercourse with a man who has had many sexual
partners may be at higher risk of developing cervical cancer. In both
cases, the risk of developing cervical cancer is higher because these
women have a higher-than-average risk of HPV infection.
- Smoking cigarettes: Women with an HPV infection who smoke cigarettes
have a higher risk of cervical cancer than women with HPV infection who
do not smoke.
- Using birth control pills for a long time: Using birth control pills for
a long time (5 or more years) may increase the risk of cervical cancer
among women with HPV infection.
- Having many children: Studies suggest that giving birth to many children
may increase the risk of cervical cancer among women with HPV infection.
- Diethylstilbestrol (DES) may increase the risk of a rare form of
cervical cancer and certain other cancers of the reproductive system in
daughters exposed to this drug before birth. DES was given to some
pregnant women in the United States between about 1940 and 1971. (It is
no longer given to pregnant women.)
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- Doctors recommend that women help reduce their risk of cervical cancer
by having regular Pap tests. A Pap test (sometimes called Pap smear or
cervical smear) is a simple test used to look at cervical cells. For
most women, the test is not painful. A Pap test is done in a doctor's
office or clinic during a pelvic exam. The doctor or nurse scrapes a
sample of cells from the cervix, and then smears the cells on a glass
slide. In a new type of Pap test (liquid-based Pap test), the cells are
rinsed into a small container of liquid. A special machine puts the
cells onto slides. For both types of Pap test, a lab checks the cells on
the slides under a microscope for abnormalities.
- Pap tests can find cervical cancer or abnormal cells that can lead to
cervical cancer. Doctors generally recommend that:
- Women should begin having Pap tests 3 years after they begin having
sexual intercourse, or when they reach age 21 (whichever comes first).
- Most women should have a Pap test at least once every 3 years.
- Women aged 65 to 70 who have had at least three normal Pap tests and no
abnormal Pap tests in the past 10 years may decide, after speaking with
their doctor, to stop cervical cancer screening.
- Women who have had a hysterectomy (surgery) to remove the uterus and
cervix, also called a total hysterectomy, do not need to have cervical
cancer screening. However, if the surgery was treatment for precancerous
cells or cancer, the woman should continue with screening.
- Women should talk with their doctor about when they should begin having
Pap tests, how often to have them, and when they can stop having them.
This is especially important for women at higher-than-average risk of
cervical cancer.
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- Some activities can hide abnormal cells and affect Pap test results.
Doctors suggest the following tips:
- Do not douche for 48 hours before the test.
- Do not have sexual intercourse for 48 hours before the test.
- Do not use vaginal medicines (except as directed by a doctor) or birth
control foams, creams, or jellies for 48 hours before the test.
- Doctors also suggest that a woman schedule her Pap test for a time that
is 10 to 20 days after the first day of her menstrual period.
- Most often, abnormal cells found by a Pap test are not cancerous.
However, some abnormal conditions may become cancer over time:
- LSIL (low-grade squamous intraepithelial lesion): LSILs are mild cell
changes on the surface of the cervix. Such changes often are caused by
HPV infections. LSILs are common, especially in young women. LSILs are
not cancer. Even without treatment, most LSILs stay the same or go away.
However, some turn into high-grade lesions, which may lead to cancer.
- HSIL (high-grade squamous intraepithelial lesion): HSILs are not cancer,
but without treatment they may lead to cancer. The precancerous cells
are only on the surface of the cervix. They look very different from
normal cells.
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- When the disease gets worse, women may notice one or more of these
symptoms:
- Abnormal vaginal bleeding
- Bleeding that occurs between regular menstrual periods
- Bleeding after sexual intercourse, douching, or a pelvic exam
- Menstrual periods that last longer and are heavier than before
- Bleeding after menopause
- Increased vaginal discharge
- Pelvic pain
- Pain during sexual intercourse
- Infections or other health problems may also cause these symptoms. Only
a doctor can tell for sure. A woman with any of these symptoms should
tell her doctor so that problems can be diagnosed and treated as early
as possible.
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- If a woman has a symptom or Pap test results that suggest precancerous
cells or cancer of the cervix, her doctor will suggest other procedures
to make a diagnosis.
- These may include:
- Colposcopy: The doctor uses a colposcope to look at the cervix. The
colposcope combines a bright light with a magnifying lens to make tissue
easier to see. It is not inserted into the vagina. A colposcopy is
usually done in the doctor's office or clinic.
- Biopsy : The doctor removes tissue to look for precancerous cells or
cancer cells. Most women have their biopsy in the doctor's office with local
anesthesia. A pathologist checks the tissue with a microscope.
- Punch biopsy: The doctor uses a sharp, hollow device to pinch off small
samples of cervical tissue.
- LEEP: The doctor uses an electric wire loop to slice off a thin, round
piece of tissue.
- Endocervical curettage: The doctor uses a curette (a small,
spoon-shaped instrument) to scrape a small sample of tissue from the
cervical canal. Some doctors may use a thin, soft brush instead of a
curette.
- Conization: The doctor removes a cone-shaped sample of tissue. A
conization, or cone biopsy, lets the pathologist see if abnormal cells
are in the tissue beneath the surface of the cervix. The doctor may do
this test in the hospital under general anesthesia. Conization also may
be used to remove a precancerous area.
- Removing tissue from the cervix may cause some bleeding or other
discharge. The area usually heals quickly. Women may also feel some pain
similar to menstrual cramps. Medicine can relieve this discomfort.
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- These are the stages of cervical cancer:
- Stage 0: The cancer is found only in the top layer of cells in the
tissue that lines the cervix. Stage 0 is also called carcinoma in situ.
- Stage I: The cancer has invaded the cervix beneath the top layer of
cells. It is found only in the cervix.
- Stage II: The cancer extends beyond the cervix into nearby tissues. It
extends to the upper part of the vagina. The cancer does not invade the
lower third of the vagina or the pelvic wall (the lining of the part of
the body between the hips).
- Stage III: The cancer extends to the lower part of the vagina. It also
may have spread to the pelvic wall and nearby lymph nodes.
- Stage IV: The cancer has spread to the bladder, rectum, or other parts
of the body.
- Recurrent cancer: The cancer was treated, but has returned after a
period of time during which it could not be detected. The cancer may
show up again in the cervix or in other parts of the body.
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- Definition of uterine sarcoma: A rare type of uterine cancer that forms
in muscle or other tissues of the uterus (the small, hollow, pear-shaped
organ in a woman's pelvis in which a baby grows). It usually occurs
after menopause. The two main types are leiomyosarcoma (cancer that begins
in smooth muscle cells) and endometrial stromal sarcoma (cancer that
begins in connective tissue cells).
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- Definition of endometrial cancer: Cancer that forms in the tissue lining
the uterus (the small, hollow, pear-shaped organ in a woman's pelvis in
which a baby grows). Most endometrial cancers are adenocarcinomas
(cancers that begin in cells that make and release mucus and other
fluids).
Estimated new cases and deaths from endometrial (uterine corpus)
cancer in the United States in 2007:
New cases: 39,080 Deaths: 7,400
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- Studies have found the following risk factors:
- Age. Cancer of the uterus occurs mostly in women over age 50.
- Endometrial hyperplasia. The risk of uterine cancer is higher if a woman
has endometrial hyperplasia. This condition and its treatment are
described above.
- Hormone replacement therapy (HRT). HRT is used to control the symptoms
of menopause, to prevent osteoporosis (thinning of the bones), and to
reduce the risk of heart disease or stroke.
- Women who use estrogen without progesterone have an increased risk of
uterine cancer. Long-term use and large doses of estrogen seem to
increase this risk. Women who use a combination of estrogen and
progesterone have a lower risk of uterine cancer than women who use
estrogen alone. The progesterone protects the uterus.
- Women should discuss the benefits and risks of HRT with their doctor.
Also, having regular checkups while taking HRT may improve the chance
that the doctor will find uterine cancer at an early stage, if it does
develop.
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- Obesity and related conditions. The body makes some of its estrogen in
fatty tissue. That's why obese women are more likely than thin women to
have higher levels of estrogen in their bodies. High levels of estrogen
may be the reason that obese women have an increased risk of developing
uterine cancer. The risk of this disease is also higher in women with
diabetes or high blood pressure (conditions that occur in many obese
women).
- Tamoxifen. Women taking the drug tamoxifen to prevent or treat breast
cancer have an increased risk of uterine cancer. This risk appears to be
related to the estrogen-like effect of this drug on the uterus. Doctors
monitor women taking tamoxifen for possible signs or symptoms of uterine
cancer.
- The benefits of tamoxifen to treat breast cancer outweigh the risk of
developing other cancers. Still, each woman is different. Any woman
considering taking tamoxifen should discuss with the doctor her personal
and family medical history and her concerns.
- Race. White women are more likely than African-American women to get
uterine cancer.
- Colorectal cancer. Women who have had an inherited form of colorectal
cancer have a higher risk of developing uterine cancer than other women
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- A woman should see her doctor if she has any of the following symptoms:
- Unusual vaginal bleeding or discharge
- Difficult or painful urination
- Pain during intercourse
- Pain in the pelvic area
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- If a woman has symptoms that suggest uterine cancer, her doctor may
check general signs of health and may order blood and urine tests. The
doctor also may perform one or more of the exams or tests described on
the next pages.
- Pelvic exam -- A woman has a pelvic exam to check the vagina, uterus,
bladder, and rectum. The doctor feels these organs for any lumps or
changes in their shape or size. To see the upper part of the vagina and
the cervix, the doctor inserts an instrument called a speculum into the
vagina.
- Pap test -- The doctor collects cells from the cervix and upper vagina.
A medical laboratory checks for abnormal cells. Although the Pap test
can detect cancer of the cervix, cells from inside the uterus usually do
not show up on a Pap test. This is why the doctor collects samples of
cells from inside the uterus in a procedure called a biopsy.
- Transvaginal ultrasound -- The doctor inserts an instrument into the
vagina. The instrument aims high-frequency sound waves at the uterus.
The pattern of the echoes they produce creates a picture. If the
endometrium looks too thick, the doctor can do a biopsy.
- Biopsy -- The doctor removes a sample of tissue from the uterine lining.
This usually can be done in the doctor's office. In some cases, however,
a woman may need to have a dilation and curettage (D&C). A D&C
is usually done as same-day surgery with anesthesia in a hospital. A pathologist
examines the tissue to check for cancer cells, hyperplasia, and other
conditions. For a short time after the biopsy, some women have cramps
and vaginal bleeding.
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- These are the main features of each stage of the disease:
- Stage I -- The cancer is only in the body of the uterus. It is not in
the cervix.
- Stage II -- The cancer has spread from the body of the uterus to the
cervix.
- Stage III -- The cancer has spread outside the uterus, but not outside
the pelvis (and not to the bladder or rectum). Lymph nodes in the pelvis
may contain cancer cells.
- Stage IV -- The cancer has spread into the bladder or rectum. Or it has
spread beyond the pelvis to other body parts.
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- Definition of ovarian cancer: Cancer that forms in tissues of the ovary
(one of a pair of female reproductive glands in which the ova, or eggs,
are formed). Most ovarian cancers are either ovarian epithelial
carcinomas (cancer that begins in the cells on the surface of the ovary)
or malignant germ cell tumors (cancer that begins in egg cells).
Estimated new cases and deaths from ovarian cancer in the United
States in 2007:
New cases: 22,430 Deaths: 15,280
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- Ovarian cancer can invade, shed, or spread to other organs:
- Invade: A malignant ovarian tumor can grow and invade organs next to the
ovaries, such as the fallopian tubes and uterus.
- Shed: Cancer cells can shed (break off) from the main ovarian tumor.
Shedding into the abdomen may lead to new tumors forming on the surface
of nearby organs and tissues. The doctor may call these seeds or
implants.
- Spread: Cancer cells can spread through the lymphatic system to lymph
nodes in the pelvis, abdomen, and chest. Cancer cells may also spread
through the bloodstream to organs such as the liver and lungs.
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- Studies have found the following risk factors for ovarian cancer:
- Family history of cancer: Women who have a mother, daughter, or sister
with ovarian cancer have an increased risk of the disease. Also, women
with a family history of cancer of the breast, uterus, colon, or rectum
may also have an increased risk of ovarian cancer.
- If several women in a family have ovarian or breast cancer, especially
at a young age, this is considered a strong family history. If you have
a strong family history of ovarian or breast cancer, you may wish to
talk to a genetic counselor. The counselor may suggest genetic testing
for you and the women in your family. Genetic tests can sometimes show
the presence of specific gene changes that increase the risk of ovarian
cancer.
- Personal history of cancer: Women who have had cancer of the breast,
uterus, colon, or rectum have a higher risk of ovarian cancer.
- Age over 55: Most women are over age 55 when diagnosed with ovarian
cancer.
- Never pregnant: Older women who have never been pregnant have an
increased risk of ovarian cancer.
- Menopausal hormone therapy: Some studies have suggested that women who
take estrogen by itself (estrogen without progesterone) for 10 or more
years may have an increased risk of ovarian cancer.
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- Early ovarian cancer may not cause obvious symptoms. But, as the cancer
grows, symptoms may include:
- Pressure or pain in the abdomen, pelvis, back, or legs
- A swollen or bloated abdomen
- Nausea, indigestion, gas, constipation, or diarrhea
- Feeling very tired all the time
- Less common symptoms include:
- Shortness of breath
- Feeling the need to urinate often
- Unusual vaginal bleeding (heavy periods, or bleeding after menopause)
- Most often these symptoms are not due to cancer, but only a doctor can
tell for sure. Any woman with these symptoms should tell her doctor.
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- You may have one or more of the following tests. Your doctor can explain
more about each test:
- Physical exam: Your doctor checks general signs of health. Your doctor
may press on your abdomen to check for tumors or an abnormal buildup of
fluid (ascites). A sample of fluid can be taken to look for ovarian
cancer cells.
- Pelvic exam: Your doctor feels the ovaries and nearby organs for lumps
or other changes in their shape or size. A Pap test is part of a normal
pelvic exam, but it is not used to collect ovarian cells. The Pap test
detects cervical cancer. The Pap test is not used to diagnose ovarian
cancer.
- Blood tests: Your doctor may order blood tests. The lab may check the
level of several substances, including CA-125. CA-125 is a substance
found on the surface of ovarian cancer cells and on some normal tissues.
A high CA-125 level could be a sign of cancer or other conditions. The
CA-125 test is not used alone to diagnose ovarian cancer. This test is
approved by the Food and Drug Administration for monitoring a woman's
response to ovarian cancer treatment and for detecting its return after
treatment.
- Ultrasound: The ultrasound device uses sound waves that people cannot
hear. The device aims sound waves at organs inside the pelvis. The waves
bounce off the organs. A computer creates a picture from the echoes. The
picture may show an ovarian tumor. For a better view of the ovaries, the
device may be inserted into the vagina (transvaginal ultrasound).
- Biopsy: A biopsy is the removal of tissue or fluid to look for cancer
cells. Based on the results of the blood tests and ultrasound, your
doctor may suggest surgery (a laparotomy) to remove tissue and fluid
from the pelvis and abdomen. Surgery is usually needed to diagnose
ovarian cancer. To learn more about surgery, see the "Treatment"
section.
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- These are the stages of ovarian cancer:
- Stage I: Cancer cells are found in one or both ovaries. Cancer cells may
be found on the surface of the ovaries or in fluid collected from the
abdomen.
- Stage II: Cancer cells have spread from one or both ovaries to other
tissues in the pelvis. Cancer cells are found on the fallopian tubes,
the uterus, or other tissues in the pelvis. Cancer cells may be found in
fluid collected from the abdomen.
- Stage III: Cancer cells have spread to tissues outside the pelvis or to
the regional lymph nodes. Cancer cells may be found on the outside of
the liver.
- Stage IV: Cancer cells have spread to tissues outside the abdomen and
pelvis. Cancer cells may be found inside the liver, in the lungs, or in
other organs.
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- Cancer treatment can affect cancer cells in the pelvis, in the abdomen,
or throughout the body:
- Local therapy: Surgery and radiation therapy are local therapies. They
remove or destroy ovarian cancer in the pelvis. When ovarian cancer has
spread to other parts of the body, local therapy may be used to control
the disease in those specific areas.
- Intraperitoneal chemotherapy: Chemotherapy can be given directly into
the abdomen and pelvis through a thin tube. The drugs destroy or control
cancer in the abdomen and pelvis.
- Systemic chemotherapy: When chemotherapy is taken by mouth or injected
into a vein, the drugs enter the bloodstream and destroy or control
cancer throughout the body.
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- Definition of vaginal cancer: Cancer that forms in the tissues of the
vagina (birth canal). The vagina leads from the cervix (the opening of
the uterus) to the outside of the body. The most common type of vaginal
cancer is squamous cell carcinoma, which starts in the thin, flat cells
lining the vagina. Another type of vaginal cancer is adenocarcinoma,
cancer that begins in glandular cells in the lining of the vagina.
Estimated new cases and deaths from vaginal (and other female
genital) cancer in the United States in 2007:
New cases: 2,140 Deaths: 790
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- Definition of penile cancer: A rare cancer that forms in the penis (the
external male reproductive organ). Most penile cancers are squamous cell
carcinomas (cancer that begins in flat cells lining the penis).
Estimated new cases and deaths from penile (and other male
genital) cancer in the United States in 2007:
New cases: 1,280 Deaths: 290
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- Definition of prostate cancer: Cancer that forms in tissues of the
prostate (a gland in the male reproductive system found below the
bladder and in front of the rectum). Prostate cancer usually occurs in
older men.
Estimated new cases and deaths from prostate cancer in the United
States in 2007:
New cases: 218,890 Deaths: 27,050
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- Studies have found the following risk factors for prostate cancer:
- Age: Age is the main risk factor for prostate cancer. This disease is
rare in men younger than 45. The chance of getting it goes up sharply as
a man gets older. In the United States, most men with prostate cancer
are older than 65.
- Family history: A man's risk is higher if his father or brother had
prostate cancer.
- Race: Prostate cancer is more common in African American men than in
white men, including Hispanic white men. It is less common in Asian and
American Indian men.
- Certain prostate changes: Men with cells called high-grade prostatic
intraepithelial neoplasia (PIN) may be at increased risk for prostate
cancer. These prostate cells look abnormal under a microscope.
- Diet: Some studies suggest that men who eat a diet high in animal fat or
meat may be at increased risk for prostate cancer. Men who eat a diet
rich in fruits and vegetables may have a lower risk. (More about diet
studies is in "The Promise of Cancer Research".)
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- Your doctor can explain more about these tests:
- Digital rectal exam: The doctor inserts a lubricated, gloved finger into
the rectum and feels the prostate through the rectal wall. The prostate
is checked for hard or lumpy areas.
- Blood test for prostate-specific antigen (PSA): A lab checks the level
of PSA in a man's blood sample. A high PSA level is commonly caused by
BPH or prostatitis (inflammation of the prostate). Prostate cancer may
also cause a high PSA level.
- The digital rectal exam and PSA test can detect a problem in the
prostate. They cannot show whether the problem is cancer or a less
serious condition. Your doctor will use the results of these tests to
help decide whether to check further for signs of cancer. Information
about other tests is in the "Diagnosis" section.
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- For men who have symptoms of prostate cancer, common symptoms include:
- Urinary problems
- Not being able to urinate
- Having a hard time starting or stopping the urine flow
- Needing to urinate often, especially at night
- Weak flow of urine
- Urine flow that starts and stops
- Pain or burning during urination
- Difficulty having an erection
- Blood in the urine or semen
- Frequent pain in the lower back, hips, or upper thighs
- Most often, these symptoms are not due to cancer. BPH, an infection, or
another health problem may cause them. Any man with these symptoms
should tell his doctor so that problems can be diagnosed and treated as
early as possible. He may see his regular doctor or a urologist. A
urologist is a doctor whose specialty is diseases of the urinary system.
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- You also may have other exams:
- Transrectal ultrasound: The doctor inserts a probe into the man's rectum
to check for abnormal areas. The probe sends out sound waves that people
cannot hear (ultrasound). The waves bounce off the prostate. A computer
uses the echoes to create a picture called a sonogram.
- Cystoscopy: The doctor uses a thin, lighted tube to look into the
urethra and bladder.
- Transrectal biopsy: A biopsy is the removal of tissue to look for cancer
cells. It is the only sure way to diagnose prostate cancer. The doctor
inserts a needle through the rectum into the prostate. The doctor takes
small tissue samples from many areas of the prostate. Ultrasound may be
used to guide the needle. A pathologist checks for cancer cells in the
tissue.
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- These are the stages of prostate cancer:
- Stage I: The cancer cannot be felt during a digital rectal exam. It is
found by chance when surgery is done for another reason, usually for
BPH. The cancer is only in the prostate.
- Stage II: The cancer is more advanced, but it has not spread outside the
prostate.
- Stage III: The cancer has spread outside the prostate. It may be in the seminal
vesicles. It has not spread to the lymph nodes.
- Stage IV: The cancer may be in nearby muscles and organs (beyond the
seminal vesicles). It may have spread to the lymph nodes. It may have
spread to other parts of the body.
- Recurrent cancer is cancer that has come back (recurred) after a time
when it could not be detected. It may recur in or near the prostate. Or
it may recur in any other part of the body, such as the bones.
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- Definition of pituitary tumor: A tumor that forms in the pituitary
gland. The pituitary is a pea-sized organ in the center of the brain
above the back of the nose. It makes hormones that affect other glands
and many body functions, especially growth. Most pituitary tumors are
benign (not cancer).
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- Definition of testicular cancer: Cancer that forms in tissues of the
testis (one of two egg-shaped glands inside the scrotum that make sperm
and male hormones). Testicular cancer usually occurs in young or
middle-aged men. Two main types of testicular cancer are seminomas
(cancers that grow slowly and are sensitive to radiation therapy) and
nonseminomas (different cell types that grow more quickly than
seminomas).
Estimated new cases and deaths from testicular cancer in the
United States in 2007:
New cases: 7,920 Deaths: 380
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- Nearly all testicular cancers are one of two general types: seminoma or nonseminoma.
Other types are rare (see Question 1).
- This disease occurs most often in men between the ages of 20 and 39. It
accounts for only 1 percent of all cancers in men (see Question 1).
- Risk factors include having an undescended testicle, previous testicular
cancer, and a family history of testicular cancer (see Question 2).
- Symptoms include a lump, swelling, or enlargement in the testicle; pain
or discomfort in a testicle or in the scrotum; and/or an ache in the
lower abdomen, back, or groin (see Question 3).
- Diagnosis generally involves blood tests, ultrasound, and biopsy (see Question
4).
- Treatment can often cure testicular cancer (see Question 5), but regular
follow-up exams are extremely important (see Question 6).
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