Fibroadenoma of the perianal region: A case report and review of the literature

Ectopic breast tissue (EBT) is defined as glands located outside of the breast. EBT has been thought to arise from a remnant of the embryonic mammary ridge along the milk line from the axilla to the groin, including the anal region. Fibroadenomas of the perianal region are very uncommon, in literature has not been reported a complete review yet. We report a case of a 36-year-old woman presented to the surgical outpatient department with complaints of swelling and growing mass in the anal region. The lesion was completely excised as a day surgery case. histological examination showed a rare case of fibroadenoma. Additionally, a comprehensive review of the literature of the last 39 years was performed, collecting 12 cases of fibroadenomas of the perianal region. The population affected was young, the mean age at presentation was 39 years and no male was reported, 6 patients reported a tender painful mass and after a completely excision no recurrence was reported despite 10 of the 12 publications analyzed did not mentioned the follow-up. in conclusion, if a lesion is discovered along the milk line, the possibility of pathological ectopic breast tissue should always be considered, and excision should be the treatment of choice.