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COMPARATIVE STUDY ON BREAST CANCER
1Osuntokun O.T and
2Ojo R.O
1
Department of Microbiology, Faculty of Science ,Adekunle Ajasin
University,Akungba Akoko,Ondo State, Nigeria.
2Department of Biological Science(Microbiology),College of Natural and Applied
Science, Achievers University, Owo ,Ondo state, Nigeria
Tel No-08063813636, 08056096672,08062484836
[email protected],[email protected]
ABSTRACT
This article presents a comprehensive review of the Breast Cancer literature
examining epidemiology, diagnosis, pathology, benignbreast disease, breast
carcinoma in situ syndromes, staging, and post-treatment surveillance among many
topics. Breast cancer remains the most commonly occurring cancer in women in
Ondo state using Owo local government as a case study.. Breast cancer detection,
treatment, and prevention are prominent issues in public health and medical
practice. Background information on developments in these arenas is provided so
that Medical Microbiologist And Economics alike can continue to update their
approach to the assessment of breast cancer risk to enhance productivity in the
local government and Nigeria as whole.
Introduction
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Breast cancer was the form of cancer most often described in ancient documents.
Because autopsies were rare, cancers of the internal organs were essentially invisible to
ancient medicine. Breast cancer, however, could be felt through the skin, and in its
advanced state often developed intofungating lesions:the tumor would becomenecrotic
(die from the inside, causing the tumor to appear to break up) and ulcerate through the
skin, weeping fetid, dark fluid.19
The oldest description of cancer was discovered in Egypt and dates back to
approximately 1600 BC. For centuries, physicians described similar cases in their
practices, with the same conclusion. Ancient medicine, from the time of the Greeks
through the 17th century, was based onhumoralism,and thus believed that breast cancer
was generally caused by imbalances in the fundamental fluids that controlled the body,
especially an excess ofblack bile 18
Alternatively, patients often saw it as divine punishment, in the 18th century, a wide
variety of medical explanations were proposed, including a lack of sexual activity, too
much sexual activity, physical injuries to the breast, curdled breast milk, and various
forms of lymphatic blockages, either internal or due to restrictive clothing. In the 19th
century, the Scottish surgeon John Rodman said that fear of cancer caused cancer, and
that this anxiety, learned by example from the mother, accounted for breast cancer's
tendency to run in families.17
Although breast cancer was known in ancient times, it was uncommon until the 19th
century, when improvements in sanitation and control of deadly infectious diseases
resulted in dramatic increases in lifespan. Previously, most women had died too young
to have developed breast cancer. Additionally, early and frequent childbearing and
breastfeeding probably reduced the rate of breast cancer development in those women
who did survive to middle age
http://wiki/Fungating_lesionhttp://wiki/Necrotichttp://wiki/Ulcer_(dermatology)http://wiki/Humoralismhttp://wiki/Black_bilehttp://wiki/Black_bilehttp://wiki/Humoralismhttp://wiki/Ulcer_(dermatology)http://wiki/Necrotichttp://wiki/Fungating_lesion8/13/2019 Comparative Study on Breast Cancer
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Mastectomy for breast cancer was performed at least as early as AD 548, when it was
proposed by the court physician Aetios of Amida to Theodora.It was not until doctors
achieved greater understanding of the circulatory system in the 17th century that they
could link breast cancer's spread to the lymph nodes in the armpit. The French surgeon
Jean Louis Petit(16741750) and later the Scottish surgeon Benjamin Bell (17491806)
were the first to remove the lymph nodes, breast tissue, and underlying chest muscle.44
What is breast cancer?
Cells in the body normally divide (reproduce) only when new cells are needed.
Sometimes, cells in a part of the body grow and divide out of control, which creates a
mass of tissue called a tumor. If the cells that are growing out of control are normal
cells, the tumor is called benign (not cancerous). If, however, the cells that are growing
out of control are abnormal and don't function like the body's normal cells, the tumor is
called malignant (cancerous).
Cancers are named after the part of the body from which they originate. Breast cancer
originates in the breast tissue. Like other cancers, breast cancer can invade and grow into
the tissue surrounding the breast. It can also travel to other parts of the body and form
new tumors, a process called metastasis.
Types of breast cancers
There are many types of breast cancer, but some of them are very rare. Sometimes a
breast tumor can be a mix of these types or a mixture of invasive and in situ cancer.
1.Ductal carcinoma in situ (DCIS): This is a type of non-invasive breast cancer. DCIS
means that the cancer cells are only in the ducts. They have not grown through the walls
of the ducts into the tissue of the breast and so cannot spread to lymph nodes or other
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organs. Nearly all women with cancer at this stage can be cured. Mammograms find
many cases of DCIS.
2.Invasive (or infiltrating) ductal carcinoma (IDC): This is the most common breast
cancer. It starts in a milk passage (a duct), breaks through the wall of the duct, and
invades the tissue of the breast. From there it may be able to spread (metastasize) to
other parts of the body. It accounts for about 8 out of 10 invasive breast cancers.
3.Invasive (infiltrating) lobular carcinoma (ILC): This cancer starts in the milk
glands (the lobules) and then spreads through the wall of the lobules. It can then
spread(metastasize) to other parts of the body. About 1 in 10 invasive breast cancers are
of this type.
4.Inflammatory breast cancer (IBC): This uncommon type of invasive breast cancer
accounts for about 1% to 3% of all breast cancers. Usually there is no single lump or
tumor. Instead, IBC makes the skin of the breast look red and feel warm. It also may
make the skin look thick and pitted, something like an orange peel. The breast may get
bigger, hard, tender, or itchy.[12]
PATHOLOGY OF BREAST CANCER
Ninety-five percent of breast cancers are carcinomas, ie, they arise from breast epithelial
elements. Breast cancers are divided into 2 major types, in situ carcinomas and invasive
(or infiltrating) carcinomas. The in situ carcinomas may arise in either ductal or lobular
epithelium, but remain confined there, with no invasion of the underlying basement
membrane that would constitute extension beyond epithelial boundaries. As would be
expected with such localized and confined malignancy,
there is negligible potential for metastases. When there is extension of the ductal or
lobular malignancy beyond the basement membrane that constitutes the epithelial
border, then the malignancy is considered invasive (or infiltrating) ductal or lobular
carcinoma. The potential for metastases and ultimately death occurs in invasive disease.
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Who gets breast cancer?
Breast cancer is the most common cancer among women other than skin cancer. Breast
cancer is the second-leading cause of cancer death in women after lung cancer, and it's
the leading cause of cancer death among women ages 35 to 54. Only 5% to 10% of
breast cancers occur in women with a clearly defined genetic predisposition for the
disease. The majority of breast cancer cases are "sporadic," meaning there is no directfamily history of the disease. Increasing age is another risk factor for developing breast
cancer.
What are the warning signs of breast cancer?
1.A lump or thickening in or near the breast or in the underarm that persists through the
menstrual cycle
30
2. A mass or lump, which may feel as small as a pea 2
3. A change in the size, shape, or contour of the breast25
4. A blood-stained or clear fluid discharge from the nipple3
5. A change in the look or feel of the skin on the breast or nipple (dimpled, puckered,
scaly, or inflamed) .33
6 .Redness of the skin on the breast or nipple1
7. An area that is distinctly different from any other area on either breast
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8.A marble-like hardened area under the skin12
These changes may be found when performing monthly breast self-exams. By
performing breast self-exams, you can become familiar with the normal monthly
changes in your breasts.
Breast self-examination should be performed at the same time each month, three to five
days after your menstrual period ends. If you have stopped menstruating, perform the
exam on the same day of each month.
What are the stages of breast cancer?
Stage 0breast cancer is when the disease is localized to the milk ducts (carcinoma in
situ).
Stage I breast cancer: The cancer is smaller than 1-inch across and hasn't spread
anywhere.
Stage IIbreast cancer is one of the following:
The tumor is less than an inch across but has spread to the underarm lymph nodes(IIA); or
The tumor is between 1 and 2 inches (with or without spread to the lymph nodes);or
The tumor is larger than 2 inches and has not spread to the lymph nodes under thearm (both IIB).
Advanced breast cancer (metastatic) results after cancer cells spread to the lymph nodes
and to other parts of the body.
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Radial scars are benign breast lesions of uncertain pathogenesis, which are usually
discovered incidentally when a breast mass is removed for other reasons. Radial scars
are characterized by a fibroelastic core from which ducts and lobules radiate.11
Atypical hyperplasia of either ductal or lobular cells, where the cells are uniform but
have lost their apical-basal cellular orientation, confers a 4-fold increased risk unless
there is also a family history of 1 or more first-degree relatives with breast cancer, where
the risk increases to 6-foldsine kinase activity. Women with atypical hyperplasia with
over-expression of HER-2/neu have a greater than 7-fold increased risk of developing
invasive breast carcinoma, as compared with women with non-proliferative benign
breast lesions and no evidence of HER-2/neu amplification,13
Nipple discharge is often of concern to women and their physicians as a sign of
malignancy, but the reality is that non-bloody nipple discharge and bilateral nipple
discharge are usually of benign causation. Women with papillomas often have bloody
discharge. Nipple discharge is uncommon in invasive breast cancer and if present is
invariably unilateral and is usually associated with a palpable mass.8
Breast pain is an uncommon presentation of breast cancer. In a study of 987 women
referred for breast imaging because of breast pain alone, only 4 women (0.4%) were
found to have invasive breast cancer, a number that was not different from a control
asymptomatic group.9
RELATIONSHIP OF BENIGN BREAST DISEASE WITH BREAST
CANCER
Breast biopsies -conferring no significantly increased risk for malignancy include any
lesion with non-proliferative change5.20 These include duct ectasia and simple
fibroadenomas, benign solid tumors containing glandular as well as fibrous tissue. The
latter is usually single but may be multiple.
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Solitary papillomas are also benign lesions conferring no increased risk of future
malignancy, despite the fact that they are often7with sanguineous or serosanguineous
nipple discharge.
Fibrocystic-change (cysts and/or fibrous tissue without symptoms) or fibrocystic
disease (fibrocysticchanges occurring in conjunction with pain, nipple discharge, or a
degree of lumpiness sufficient to cause suspicion of cancer) does not carry increased risk
for cancer (other than the potential for missing a malignant mass).
Some clinicians differentiate fibrocystic change or disease into those of hyperplasia,
adenosis, and cystic change becauseof their differentiation into age distributions.
Hyperplasia characteristicallyoccurs in womenin their 20s, often with upper outer
quadrant breast pain and an indurated axillary tail, as a result of stromal
proliferation.
Women in their 30s present with solitary or multiple breast nodules 210 mm in
size, as a result of proliferation of glandular cells.
Women in their 30s and 40s present with solitary or multiple cysts. Acute enlargement
of cysts may cause pain, and because breast ducts are usually patent, nipple discharge is
common with the discharge varying in color from pale green to brown.28
How is breast cancer diagnosed?
During your regular physical examination, your doctor will take a thorough personal and
family medical history. He or she will also perform and/or order one or more of the
following:
1.Breast examination:During the breast exam, the doctor will carefully feel the lump
and the tissue around it. Breast cancer usually feels different (in size, texture, and
movement) than benign lumps.
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2.Mammography:An X-ray test of the breast can give important information about a
breast lump.
3.Digital mammography: A technique in which an X-ray image of the breast is
digitally recorded into a computer rather than on a film. This may be better for women
with dense breasts.
4.Ultrasonography:This test uses sound waves to detect the character of a breast lump
-- whether it is a fluid-filled cyst (not cancerous) or a solid mass (which may or may not
be cancerous). This may be performed along with the mammogram. 15
Based on the results of these tests, your doctor may or may not request a biopsy test to
get a sample of the breast mass cells or tissue. Biopsies are performed using surgery or
needles.
1.After the sample is removed, it is sent to a lab for testing. A pathologist -- a doctor
who specializes in diagnosing abnormal tissue changes -- views the sample under a
microscope and looks for abnormal cell shapes or growth patterns. When cancer is
present, the pathologist can tell what kind of cancer it is (ductal or lobular carcinoma)
and whether it has spread beyond the ducts or lobules (invasive).
2.Laboratory tests, such as hormone receptor tests (estrogen and progesterone) and
human epidermal growth factor receptor (HER2/neu), can show whether hormones or
growth factors are helping the cancer grow. If the test results show that they are (a
positive test), the cancer is likely to respond to hormonal treatment or antibody
treatment.10 These therapies deprive the cancer of the estrogen hormone or use a
monoclonal antibody known as herceptin to treat the cancer.
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3.Breast cancer diagnosis and treatment are best accomplished by a team of experts
working together with the patient. Each patient needs to evaluate the advantages and
limitations of each type of treatment and work with her team of physicians to develop
the best approach.
Other diagnostic tests
Other methods being investigated include:
1.Scintimammography: A technique in which radioactive contrast agents are injected
into a vein in the arm. An image of the breast is taken with a special camera, which
detects the radiation (gamma rays) emitted by the dye. Tumor cells, which contain more
blood vessels than benign tissue, collect more of the dye and project a brighter image.
2.Positron emission tomography (PET) scanning:A technique that measures a signal
from injected radioactive tracers that migrate to the rapidly dividing cancer cells. The
PET scanner picks up the signal and creates an image.
3.Magnetic resonance imaging (MRI): A test that produces very clear pictures, or
images, of the human body without the use of X-rays. MRI uses a large magnet, radio
waves, and a computer to produce these images.
4.Scientists are also exploring ways to detect breast cancer or markers of cancer in the
blood, urine, and in fluid taken from the nipple.5
How is breast cancer treated?
If the tests find cancer, you and your doctor will develop a treatment plan to eradicate
the breast cancer, to reduce the chance of cancer returning in the breast, as well as to
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reduce the chance of the cancer traveling to a location outside of the breast. Treatment
generally follows within a few weeks after the diagnosis.
The type of treatment recommended will depend on the size and location of the tumor in
the breast, the results of lab tests done on the cancer cells, and the stage, or extent, of the
disease. Your doctor will usually consider your age and general health as well as your
feelings about the treatment options.
Breast cancer treatments are local or systemic. Local treatments are used to remove,
destroy, or control the cancer cells in a specific area, such as the breast. Surgery and
radiation treatment are local treatments. Systemic treatments are used to destroy orcontrol cancer cells all over the body. Chemotherapy and hormone therapy are systemic
treatments. A patient may have just one form of treatment or a combination, depending
on her needs.
Surgery: Breast conservation surgery involves removing the cancerous portion of the
breast and an area of normal tissue surrounding the cancer, while striving to preserve the
normal appearance of the breast. This procedure has often been called a lumpectomy,
which is a partial mastectomy. Some of the lymph nodes under the arm are also
removed. Usually, six weeks of radiation therapy is then used to treat the remaining
breast tissue. Most women who have a small, early-stage tumor are excellent candidates
for this approach.16
What happens after treatment?
Following local breast cancer treatment, the treatment team will determine the likelihood
that the cancer will recur outside the breast. This team usually includes a medical
oncologist, a specialist trained in using medicines to treat breast cancer. The medical
oncologist, who works with the surgeon, may advise the use of the drugs like tamoxifen
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or anastrozole (ARIMIDEX) or possibly chemotherapy. These treatments are used in
addition to, but not in place of, local breast cancer treatment with surgery and/or
radiation therapy.19
How can I protect myself from breast cancer?
Follow these three steps for early detection:
1.Get a mammogram.The American Cancer Society recommends having a baseline
mammogram at age 35, and a screening mammogram every year after age 40.
Mammograms are an important part of your health history. Recently, the US Preventive
Services Task Force (USPTF) came out with new recommendations regarding when and
how often one should have mammograms. These include starting at age 50 and having
them every two years. We do not agree with this, but we are in agreement with the
American Cancer Society and have not changed our guidelines, which recommend
yearly mammograms starting at age 40.
2.Examine your breasts each month after age 20.You will become familiar with the
contours and feel of your breasts and will be more alert to changes.
3.Have your breast examined by a healthcareprovider at least once every three years
after age 20, and every year after age 40. Clinical breast exams can detect lumps that
may not be detected by mammogram.
20
Survival rates for breast cancer
Some people with cancer may want to know the survival rates for their type of cancer.
Others may not find the numbers helpful, or may even not want to know them. Whether
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or not you want to read about survival rates is up to you. If you decide that you do not
want to read about them, skip to the next section.
The 5-year survival rate refers to the percentage of patients who live at least 5 years after
their cancer is found. Of course, many people live much longer than 5 years. Also,
people with cancer can die from other things, and these numbers do not take into account
the fact that some of the deaths are from causes other than breast cancer. These numbers
are based on women treated a number of years ago. Because we now find more cancers
early and use newer, better treatments, the survival rates are getting better all the time.
Risk factors for breast cancer
1. Lifestyle
1.Smoking- tobacco appears to increase the risk of breast cancer with the greater the
amount of smoked and the earlier in life smoking began the higher the risk. [23]In those
who are long term smokers the risk is increased 35% to 50%.14 A lack of physical
activity has been linked to ~10% of cases.22
2.Breast feeding.-The association between breast feeding and breast cancer has not been
clearly determined with some studies finding support for an association and others not.
3.Abortion-breast cancer hypothesis -In the 1980s the abortionbreast cancer hypothesis
posited that induced abortion increased the risk of developing breast cancer.[26
4.Miscarriages nor abortions-This hypothesis has been the subject of extensive scientific
inquiry which has concluded that neither miscarriages nor abortions are associated.[6]
5Oral contraceptives .-There may be an association between oral contraceptives and the
development of premenopausal breast cancer.26
6.Not breastfeeding: Some studies have shown that breastfeeding slightly lowers breast
http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-25http://c/Documents%20and%20Settings/user/My%20Documents/Breast%20cancer/Breast_cancer.htm%23cite_note-258/13/2019 Comparative Study on Breast Cancer
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cancer risk, especially if the breastfeeding lasts 1 to 2 years. This could be because
breastfeeding lowers a womans total number of menstrual periods, as does pregnancy.
But this has been hard to study because, in countries such as the United States,
breastfeeding for this long is uncommon.29
7.Being overweight or obese: Being overweight or obese after menopause (or because
of weight gain that took place as an adult) is linked to a higher risk of breast cancer. But
the link between weight and breast cancer risk is complex. The risk seems to be higher if
theextra fat is around the waist.
8.Lack of exercise: Studies show that exercise reduces breast cancer risk. The only
question is how much exercise is needed. One study found that as little as 1 hour and 15
minutes to 2 hours of brisk walking per week reduced the risk by 18%. Walking 10
hours a week reduced the risk a little more.
Risk factors you cannot change
1.Gender: Being a woman is the main risk for breast cancer. While men also get the
disease, it is about 100 times more common in women than in men.
2.Age: The chance of getting breast cancer goes up as a woman gets older. About 2 of 3
women with invasive breast cancer are 55 or older when the cancer is found.
3.Genetic risk factors: About 5% to 10% of breast cancers are thought to be linked to
inherited changes (mutations) in certain genes. The most common changes are those of
the BRCA1 and BRCA2 genes. Women with these gene changes have up to an
80%chance of getting breast cancer during their lifetimes. Other gene changes may raise
breast cancer risk, too.
4.Family history: Breast cancer risk is higher among women whose close blood
relatives have this disease. The relatives can be from either the mothers or fathers side
of the family. Having a mother, sister, or daughter with breast cancer about doubles a
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womans risk. Its important to notethat most (over 85%) women who get breast cancer
do nothave a family history of this disease, so not having a relative with breast cancer
doesnt mean you wont get it.
5.Personal history of breast cancer: A woman with cancer in one breast has a greater
chance of getting a new cancer in the other breast or in another part of the same breast.
This is different from a return of the first cancer (called a recurrence).
6.Race: Overall, white women are slightly more likely to get breast cancer than African-
American women. African American women, though, are more likely to die of breast
cancer. And in women under 45 years of age, breast cancer is more common in African
American women. Asian, Hispanic, and Native-American women have a lower risk of
getting and dying from breast cancer.
7.Dense breast tissue: Dense breast tissue means there is more gland tissue and less
fatty tissue. Women with denser breast tissue have a higher risk of breast cancer. Dense
breast tissue can also make it harder for doctors to spot problems on mammograms.
8.Certain benign (not cancer) breast problems: Women who have certain benign
breast changes may have an increased risk of breast cancer. Some of these are more
closely linked to breast cancer risk than others. For more details about these, see our
document,
9.Non-cancerous Breast Conditions.
Lobular carcinoma in situ: In this condition, cells that look like cancer cells are in the
milk-making glands (lobules), but they do not grow through the wall of the lobules and
cannot spread to other parts of the body. It is not a true cancer or pre-cancer, but having
LCIS increases a woman's risk of getting cancer in either breast later. For this reason, it's
important that women with LCIS make sure they have regular mammograms and doctor
visits. Women with lobular carcinoma in situ (LCIS) have a 7 to 11 times greater risk of
developing cancer in either breast.
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10.Menstrual periods: Women who began having periods early (before age 12) or who
went through the change of life (menopause) after the age of 55 have a slightly increased
risk of breast cancer. The increase in risk may be due to a longer lifetime exposure to the
hormones estrogen and progesterone.
11.Breast radiation early in life: Women who have had radiation treatment to the chest
area (as treatment for another cancer) earlier in life have a greatly increased risk of
breast cancer. The risk varies with the patients age when she had radiation. The risk
from chest radiation is highest if the radiation were given during the teens, when the
breasts were still developing. Radiation treatment after age 40 does not seem to increase
breast cancer risk.
12.Treatment with DES: In the past, some pregnant women were given the drug DES
(diethylstilbestrol) because it was thought to lower their chances of losing the baby
(miscarriage). Studies have shown that these women have a slightly increased risk of
getting breast cancer. The effect on the children exposed in the womb is less clear, but
they may also have a slightly higher risk of breast cancer
Management and Medication of Breast Cancer
Drugs used after and in addition to surgery are called adjuvant therapy. Chemotherapy or
other types of therapy prior to surgery are called neoadjuvant therapy.
There are currently three main groups of medications used for adjuvant breast cancer
treatment: hormone blocking therapy, chemotherapy, and monoclonal antibodies.
Hormone blocking therapy
Some breast cancers require estrogen to continue growing. They can be identified by the
presence of estrogen receptors (ER+) and progesterone receptors (PR+) on their surface
(sometimes referred to together as hormone receptors). These ER+ cancers can be
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treated with drugs that either block the receptors, e.g. tamoxifen (Nolvadex), or
alternatively block the production of estrogen with an aromatase inhibitor, e.g.
anastrozole (Arimidex)34 or letrozole(Femara). Aromatase inhibitors, however, are only
suitable for post-menopausal patients. This is because the active aromatase in
postmenopausal women is different from the prevalent form in premenopausal women,
and therefore these agents are ineffective in inhibiting the predominant aromatase of
premenopausal women
Chemotherapy
Predominately used for stage 24 disease, being particularly beneficial in estrogen
receptor-negative (ER-) disease. They are given in combinations, usually for 36
months. One of the most common treatments is cyclophosphamide plus doxorubicin
(Adriamycin), known as AC. Most chemotherapy medications work by destroying fast-
growing and/or fast-replicating cancer cells either by causing DNA damage upon
replication or other mechanisms; these drugs also damage fast-growing normal cells
where they cause serious side effects. Damage to the heart muscle is the most dangerous
complication of doxorubicin. Sometimes a taxane drug, such as docetaxel, is added, and
the regime is then known as CAT; taxane attacks the microtubules in cancer cells.
Another common treatment, which produces equivalent results, is cyclophosphamide,
methotrexate, and fluorouracil (CMF). (Chemotherapy can literally refer to any drug, but
it is usually used to refer to traditional non-hormone treatments for cancer.15
Radiation
Radiationis given after surgery to the region of the tumor bed and regional lymph nodes,to destroy microscopic tumor cells that may have escaped surgery. It may also have a
beneficial effect on tumor microenvironment.38
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Radiation therapy can be delivered as external beam radiotherapyor as brachytherapy
(internal radiotherapy). Conventionally radiotherapy is given after the operation for
breast cancer. Radiation can also be given at the time of operation on the breast cancer-
intra operatively. The largest randomized trial to test this approach was the TAR-GIT-A
Trial.21
Radiation which found that targeted intraoperative radiotherapy was equally effective at
4-years as the usual several weeks' of whole breast external beam radiotherapy.
Radiation can reduce the risk of recurrence by 5066% (1/2 2/3 reduction of risk)
when delivered in the correct dose and is considered essential when breast cancer is
treated by removing only the lump (Lumpectomy or Wide local excision).
Can breast cancer be prevented?
There is no sure way to prevent breast cancer. But there are things all women can do that
might reduce their risk and help increase the odds that if cancer does occur, it is found at
an early, more treatable stage.
Lowering your risk: You can lower your risk of breast cancer by changing those risk
factors that are under your control. Body weight, physical activity, and diet have all been
linked to breast cancer, so these might be areas where you can take action. At this time,
the best advice about diet and activity to possibly reduce the risk of breast cancer is to:
1.Get regular physical activity.
2.Reduce your lifetime weight gain by eating fewer calories and getting regular
exercise.
3.Avoid or limit your alcohol intake.
To find out more, see our document, American Cancer Society Guidelines on Nutrition
and Physical Activity for Cancer Prevention.
Women who choose to breastfeed for at least several months may also reduce their
breast cancer risk. Not using hormone therapy after menopause can also help you avoid
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raising your risk. It's not clear at this time whether chemicals that have estrogen-like
properties (like those found in some plastic bottles or certain cosmetics and personal
care products) increase breast cancer risk. If there is an increased risk, it is likely to be
very small. Still, women who are concerned may choose to avoid products that contain
these substances when they can3.
Finding breast cancer early: It is also important for women to follow the American
Cancer Societys guidelines for finding breast cancer early.
Society and culture belief/Effect of breast cancer
Before the 20th century, breast cancer was feared and discussed in hushed tones, as if itwere shameful. As little could be safely done with primitive surgical techniques, women
tended to suffer silently rather than seeking care. When surgery advanced, and long-term
survival rates improved, women began raising awareness of the disease and the
possibility of successful treatment. The "Women's Field Army", run by the American
Society for the Control of Cancer (later the American Cancer Society) during the 1930s
and 1940s was one of the first organized campaigns. In 1952, the first peer-to-peer
support group, called "Reach to Recovery", began providing post-mastectomy, in-
hospital visits from women who had survived breast cancer.43
The breast cancer movement of the 1980s and 1990s developed out of the larger feminist
movements and women's health movement of the 20th century. This series of political
and educational campaigns, partly inspired by the politically and socially effective AIDS
awareness campaigns, resulted in the widespread acceptance of second opinions before
surgery, less invasive surgical procedures, support groups, and other advances in patient
care
Breast cancer culture
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Breast cancer culture, or pink ribbon culture, is the set of activities, attitudes, and values
that surround and shape breast cancer in public. The dominant values are selflessness,
cheerfulness, unity, and optimism. Appearing to have suffered bravely is the passport
into the culture.
The woman with breast cancer is given a cultural template that constrains her emotional
and social responses into a socially acceptable discourse: She is to use the emotional
trauma of being diagnosed with breast cancer and the suffering of extended treatment to
transform herself into a stronger, happier and more sensitive person who is grateful for
the opportunity to become a better person. Breast cancer thereby becomes a rite of
passage rather than a disease.4
To fit into this mold, the woman with breast cancer needs to normalize and feminize her
appearance, and minimize the disruption that her health issues cause anyone else. Anger,
sadness and negativity must be silenced.
he primary purposes or goals of breast cancer culture are to maintain breast cancer's
dominance as the preminent women's health issue, to promote the appearance that
society is "doing something" effective about breast cancer, and to sustain and expand the
social, political, and financial power of breast cancer activists.43
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