[Granulomatous mastitis and corynebacteria infection. Two case reports].

Diagnosis of granulomatous mastitis must be based on a multidisciplinary approach. First, it's necessary to eliminate carcinomatous mastitis. Usually, the diagnosis is unknown except for tuberculous and sarcoidosis granulomatous mastitis. On observations in two cases of Corynebacterium granulomatous mastitis, we discussed the diagnosis and therapeutic approach. When there is a clinical suspicion of granulomatous mastitis, surgical biopsy with immediate histological analysis and bacteriological culture of mammary tissue should be performed. This multidisiplinary approach should reduce the number of idiopathic granulomatous mastitis observed. Antibiotic treatment is required after biopsy or surgical excision of granuloma.