Cancer. Yes, the word does not sound familiar to our ear and reluctant
imagine if we have the disease. But in fact, have cancer ranks second as a
cause of death in the world, where each of his first hour there are about 5-6
people who died, every 10 minutes there are 2-3 new people with cancer, and the
sad fact is 1 in 10 womens in industrialized countries are also suffering from
advanced cancer.
Based on the hispatologi research results, there are 5 types of cancer which
is most often experienced by women in general, they are namely cervical cancer,
breast cancer, ovarian cancer / ovarian, skin cancer and the last rectal
cancer.
On this occasion, we will discuss about breast cancer in general with a few
breast cancer pictures of the sufferers.
Main Factors Which Can Cause Breast Cancer
Every woman can have a probability that can be higher or lower,
depending on several important factors, such as age at first of menstruation,
genetic factors, family history, socio-economic, lifestyle changes and changes
in menstrual pattern can also be associated with increased risk for breast
cancer.
Of some description, then the things that can cause breast cancer can be
categorized into several factors as follows:
REPRODUCTIVE FACTORS
Early Age Of Menarche
Expressed early menarche is associated with increased cancer risk. As in
developing countries, there has been a shift in the age of 16-17 years to 12-13
years of age. However, approximately 10% reduction in the risk of cancer would
occur if every 2-year delay in age menache.
Characteristics of the menstrual cycle of less than 26 days or longer
than 31 days during ages 18 to 22 years, and a short menstrual cycle at the age
of 30 years is estimated to reduce the risk of breast cancer.
And the late arrival of the menopause can also reduce the risk of breast
cancer approximately 3%.
First Pregnancy
The age of first pregnancy at an advanced age, ie> 30 years are more
at risk as much as 2x compared to women who had their first pregnancy before
the age of 20 years of age. This is because due to the stimulation of maturation
of breast cells induced by pregnancy, which makes these cells more sensitive to
carcinogenic transformation.
Low Of Parity
In a meta-analysis study, nul lipara women have a 30% risk to develop
into cancer than multiparas one.
With the increase of high parity, will decrease the risk of cancer. That’s
is circulating hormone levels during
pregnancy can lead to high differentiation of the Terminal Duct-Lobular Unit
(TDLU), which is the main place in the transformation process of breast cancer.
The process of differentiation of these TDLU protective against breast cancer
growth permanently.
Lactation Period
Perfectly lactation is necessary for the development and growth of
infants from birth to 2 years old. Positive impact on women who breastfeed
exclusively (2 years old) has nonstop stronger effect in warding off the risk
of breast cancer, this is due to decreased estrogen levels and the rate of
secretion of carcinogenic substances during breastfeeding.
ENDOCRINE FACTORS
Endogenous Factors
Exposure to endogenous factors in the life of a woman is very
influential on the growth of breast cancer cells. That will be accelerated in
the event of menstruation before the age of 12 years old and going through
menopause after age 55 years.
EXOGENOUS FACTORS
Oral Contraceptives
Although there is controversy over whether the effect of oral
contraceptives in the development of breast cancer cells or not, but some
studies claim that oral contraceptives play a role in the increase of cancer
cells in premenopausal women, but not in women in the postmenopausal period.
Hormone replacement therapy (Hormone Replacement Theraphy)
It is true that the benefits of this therapy can reduce the risk of
coronary heart disease and osteoporosis (bone loss), but other adverse effects
that will happen is that it can increase the risk of breast cancer is about
30-40%.
To date, there is an increase of 2.3% annually in postmenopausal women
who have used it. Therefore, the need for the complete, accurate, and thorough
consideration for postmenopausal women to undergo hormone replacement therapy
such.
Mammography In Breast Density
Density / breast density is influenced by the amount of connective
tissue, the epithelium and the amount of fatty tissue in the breast. The
difference in density / density on each woman is different, one such influence
20-30% of menopausal status, genetic predisposition, weight and parity.
Therefore, in women with higher breast density have 2-6 times more risky
for developing into cancer, compared with lower breast density.
Alcohol Intake
Intake of alcohol in a long time and routine can affect estrogen
activity which increased the number to more than ever, especially in urine and
body parts, the skin.
Alcohol can also cause hyperinsulinemia that stimulates the growth
factor in breast tissue (insulin-like growth factor), and inhibit the
occurrence of spontaneous regression of precancerous lesions during menopause,
so the growth of the lesion can be changed from estrogen-dependent to be
autonomous.
Obesity
Obesity is associated with a reduced risk of cancer in pre-menopausal
women, but instead will be an increased risk of breast cancer for
post-menopausal period with BMI> 26.6 kg/m2 with a level of risk (OR = 1.22)
.26
Genetics / Family History
* Family Members With Breast Cancer
Studies show that when a woman has a parent with a history of breast
cancer, then certainly he has the same risk. In which cancer cells can develop
into cancer by 1.7 to 4.0 times compared to the existing population.
Genetic factors also influenced by factors derived from environmental or
genetic interactions. Which can cause a variety of changes in the genes that
have been there.
Li Fraumeni syndrome, is a disorder with mutations in the gene p 53,
which is a rare condition, in which there are abnormalities such as brain
tumors, soft tissue sarcoma and may be associated with breast cancer.
Nonpoliposis colon cancer (Lynch syndrome) have a greater risk for
breast cancer occurred compared to the population.
Meanwhile, Cowden's syndrome, mutations in the PTEN gene, cause the
clinical manifestations of the skin and increase the risk of breast cancer and
thyroid cancer.
* Family Members With a History of Ovarian Cancer
The most common mutations in breast cancer, have a family member with a
history of ovarian cancer is in the genes BRCA 1 and BRCA 2. In normal cells,
these genes may help to prevent cancer, by producing proteins that can prevent
the growth of unusual / abnormal.
Women with mutations in the genes BRCA 1 and BRCA 2, has a 80% chance to
develop into breast cancer during her lifetime. Keep in mind, that the breast
and ovarian cancer have a closely relationship genetics.
Women with mutations in the genes BRCA 1 and BRCA 2, not only at risk
for breast cancer, but also have an equal chance of developing ovarian cancer.
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