Breast hyperplasia, found during physical examinations, can present as nodular lumps in one or both breasts. These lumps vary in size, are firm but not hard, and may sometimes be tender to touch. The boundaries between the lumps and surrounding breast tissue are unclear, yet there is no adhesion to the skin or chest muscles. Occasionally, the condition presents as an area of indistinct thickening, with lesions typically located in the upper outer quadrant of the breast, but it can affect the entire breast. The size of the lumps often changes with the menstrual cycle, enlarging during menstruation or shrinking afterward. Sometimes, there might be nipple discharge, which can be yellow-brown, serous, or bloody. The course of the disease can be prolonged, but symptoms usually disappear or lessen after menopause.