Breast cancer is a malignant tumor that grows in the breast tissue.
Cancer can begin to grow in the milk glands, milk ducts, fatty tissue and connective tissue in the breast.
* Causes
The cause is unknown, but there are some risk factors that cause a woman to be more likely to have breast cancer.
* Risk Factor
Several factors influencing risk are:
1. Age.
Approximately 60% of breast cancer occurs in over 60 years of age. Greatest risk found in women aged over 75 years.
2. Had breast cancer.
After the affected breast removed, then the risk of breast cancer in healthy increased by 0,5-1% / year.
3. Family history of breast cancer.
Women are mothers, sisters or children suffering from cancer, a risk 3 times more likely to have breast cancer.
4. Genetic and hormonal factors.
5. Disease had non-cancerous breast.
6. Menarche (first menstruation) before age 12 years, menopause after age 55 years, first pregnancy after age 30 years or had never been pregnant. (more…)