Breast cancer forms in tissues of the breast. About 1 in 5 new breast cancer cases are ductal carcinoma in situ.
Common breast cancer signs and symptoms
- Skin changes, such as swelling and redness
- General pain in/on any part of the breast
- Lumps or nodes felt on or inside of the breast
- An increase in size or change in shape of the breast
- Changes in the appearance of one or both nipples
- Nipple discharge other than breast milk
- 1 in 8 women will develop invasive breast cancer during her lifetime
- Women with less fatty tissue and more glandular and fibrous tissue may be at higher risk for developing breast cancer.
- Fat tissue may contribute to increases in estrogen levels, and high high levels of estrogen may increase the risk of breast cancer.
- Alcohol use is linked to an increased risk of developing breast cancer. The risk increases with the amount of alcohol consumed.
- The 5-year survival rate for women with breast cancer has risen from 63% in 1960s to 89% today.
- 2 of 3 invasive breast cancers are found in women ages 55 or older.
- Breast cancer is 100 times more common in women than men.