Granulomatous lobular mastitis is a rare benign breast disease. It is characterized by chronic, non-caseating granulomatous lobulitis. It may be misdiagnosed as a carcinoma of the breast and may lead to mastectomy. Diagnostic criteria include-A) Granulomatous infl ammation with multinucleated giant cells, epithelioid histiocytes. B) It is centered on lobules with minor ductal and periductal infl ammation. C) It nearly always follows the pregnancy. A case of GLM, which was treated with local excision and postoperative steroid therapy is being reported to increase awareness amongst surgeons and pathologist.