Fibroadenoma

Fibroadenomas are benign breast tumors that arise in young women. Histological examination of these lesions usually reveals lobular hyperplasia. Known risk factors for breast cancer, such as early age of menarche or nulliparity, do not increase the risk of fibroadenomas. The diagnosis of fibroadenomas is based on the physical finding of a mobile, non-tender breast mass, that is slightly hypoechoic on ultrasonography and that has cell clusters in fine needle aspiration. Fibroadenomas that are asymptomatic and small in size should be treated conservatively, while ones that are growing rapidly in size and are symptomatic should be surgically excised.