Accessory breast granulomatous mastitis: A case report and mini-review of the literature

Granulomatous mastitis (GM) is a rare inflammatory condition that primarily affects the breasts, and its occurrence in accessory breast tissue is even rarer. The present report describes the case of a patient with GM in the accessory breast. A 43-year-old female patient presented with a 1-month history of pain in the left axilla and breast.

An analysis of her medical and surgical history did not reveal any notable findings, but she had a history of four full-term pregnancies and a cumulative lactation period of 4 years. Upon a clinical examination, a palpable, ill-defined, tender mass was noted along with an accessory breast and nipple in the axilla. The diagnosis was chronic mastitis, and she was treated with oral corticosteroids, amoxicillin, cabergoline and analgesics.

Her condition initially improved; however, the symptoms recurred 1 year later. A wide local excision of the left axillary tail was performed. The patient …