Structures located in the nucleus of a cell, containing genes. A physical examination by a doctor or nurse of the breast, underarm, and collarbone area, first on one side, then on the other. The use of a small cutting needle to remove a core of tissue for microscopic examination. Normal tissue changes that occur in response to the changing levels of female hormones during the menstrual cycle. Cyclic breast changes can produce swelling, tenderness, and pain.
Breast cysts are benign.
A technique for recording x-ray images in computer code, which allows the information to enhance subtle, but potentially significant, changes. Breast ducts transport milk from the breast's lobules out to the nipple. Excisional biopsies remove the entire lump from the breast. Breast x-rays that miss cancer when it is present. Breast x-rays that indicate breast cancer is present when the disease is truly absent.