Breasts, known as mammary Glands are milk producing glands which consists of lobules and tubes. Function of lobule is to produce milk while tubes (ducts) carry the milk to nipple. Breast is made up of glandular tissue, fibrous (supporting tissue) and fatty tissues.
Occasionally fibroadenomas are too small to be felt by the patient on self examination. If size is bigger, they can be felt by hands on examination. They feel separated from rest of the breast tissue with well defined edges and clear shape. Mostly they are movable under the skin & may feel like marble on touch. They can also feel like rubber and usually do not cause pain on touching or moving.