<unk>  is a very common benign breast mass. It can be seen in women of any age but it is mostly seen in adolescents and premenopausal women. It is mostly due to multiplication of some cells (connective tissue cells) around the breast tissue. A<unk>  is usually round to oval in shape, about 2 to 3 cm in size, and has a rubbery feel. It is mostly painless and moves around under the skin when touched/examined. A<unk>  commonly would reduce in size and disappear but, in some cases it may increase in size or remain unchanged. If it grows past 5cm, it becomes a giant<unk> .<unk>  is said to be associated with an increased sensitivity of the breast tissue to estrogen. With this, it can increase in size during pregnancy or in those on hormone therapy. Because of the decrease in estrogen during menopause, it can get smaller in postmenopausal women. It usually presents as a single lump in the breast but in a few patients, it can present as multiple lumps in one or both breasts.
Fibroadenoma
Intraductal papilloma
Inverted papilloma
Trichoadenoma
Carcinoma in situ
Adenomyomatosis
Adenoma
Atypical fibroxanthoma