Susceptibility to breast cancer groups (a) room benign disease
Could be transformed into a cancer risk, but the risk of various diseases, large and small, can be divided into three categories:
1. Does not increase breast cancer risk of the disease Fung histological mild hyperplasia.
(1), fibrocystic disease and cystic dilatation (72%), mild hyperplasia (40%); non-sclerosing adenosis (22%); tube around the fibrosis (16%); simple fibroadenomas (15% -23%).
(2) benign hamartoma, lipoma, simple papilloma, neurofibroma, giant adenomas, glandular myoepithelial tumor.
(3) invasive disease hematoma, fat necrosis.
(4) infection granulomas and mastitis.
(5), sarcoidosis
(6) metaplasia squamous metaplasia, apocrine metaplasia.
(7) Diabetes breast lesions.
2. Slight increase in breast cancer-risk histological features of disease are all atypical hyperplasia. Including the unusual ductal hyperplasia, fibroadenoma composite (with diameter> 3 mm of the cyst, sclerosing adenosis, epithelial calcifications, or papillary sweat adenoid change), papilloma or papillomatosis, radioactive epilepsy marks, simple catheter adenosis .
3. Moderate increase in breast cancer-risk histological features of the disease have atypical hyperplasia. Including atypical ductal hyperplasia and atypical lobular hyperplasia.
(B) stimulate the spirit of life
According to statistics, those with mental stimulation of breast cancer incidence rates were higher than the 2.36 dollars to stimulate the spirit of times.
Susceptibility to breast cancer population (c) no history of breast-feeding
According to statistics, no breast-feeding incidence of breast cancer than those who breast-feeding were 1.84 times higher. Breast-feeding have lower breast cancer occurred role.
(D) family history of breast cancer, including maternal and paternal increased incidence of breast cancer. According to statistics there is family history of cancer compared to those without family history of high 1.84 times.
(E) irregular menstrual cycle menstrual cycle short. According to statistics, irregular menstruation incidence of breast cancer who were higher than 1.65 times the rules.
(F) screening when breast X ray photography of breast density is a risk factor for increased relative risk than the normal increase of 5 times.
(Vii) women in plasma levels of free estradiol and higher pay Koo estrogen levels after menopause high or who used estrogen replacement therapy.
(H) 20 kg weight gain after menopause
(I) late menopause, late or extended vibration
The first child bearing age over 35, or children.
Susceptibility to breast cancer groups (X) early menarche
Menarche younger than 12 years of age or menopausal age older than 55 years of age. According to statistics, 1.31 times higher incidence of breast cancer. Three Three 11-year-old age at menarche than the two 14-year-old women, the risk of breast cancer increased by 20%.