A cyst is a fluid-filled sac. Breast cysts usually do not contain cancer cells (are benign). Some women who have lumpy breasts also have benign breast cysts that are surrounded by fibrous tissue. Some cysts cause lumps that can be seen or felt (palpable). A cyst that can be felt may move about under the fingers. Its...
Lobular carcinoma in situ (LCIS) is a type of abnormal cell change found in the milk glands (lobules) of the breast. LCIS is not cancer and the abnormal cells don't spread beyond the lobules. But having LCIS makes you more likely to develop breast cancer later in life. LCIS usually doesn't cause any symptoms or show up...