idiopathic granulomatous lobular mastitis in a male breast: a case report

Idiopathic granulomatous lobular mastitis (iglm) that mimics breast cancer both clinically and radiologically is a chronic inflammatory condition of the breast without a known etiology. it usually affects childbearing women and is associated with pregnancy, lactation, or use of oral contraceptives. iglm in a male breast is extremely rare, and only two case reports have been published. a 60yearold man was referred to our hospital for right breast mass. he had right breast pain with a small palpable lump for 2 weeks. ultrasonography (us) was performed with color doppler us and us elastography. the lesion was diagnosed as iglm pathologically by 14 gauge core needle biopsy. we describe a very rare case of iglm arising from a male breast based on ultrasonographic and pathologic findings. iglm should be considered as a differential diagnosis in male breast diseases, although the imaging findings may not be comparable with typical iglm.