Breast cysts are benign fluid-filled sacs that grow inside the breast tissue, normally affecting women over the age of 35 who have not reached the menopause. They are also detected in women who are using hormone replacement therapy (HRT) after they have went through menopause. Cysts in both your breasts, is quite common, and they can become larger, tender and become painful just before your menstrual period. Cysts can occur without noticing anything symptoms and they are sometimes found by chance when examinations by your GYN are done for some other reason. Usually, all breast cysts identified as simple cysts It is estimated that perhaps 1 in 1,000 cysts may harbor a tumor (not necessarily malignant). These can usually be identified by...