[Idiopathic granulomatous mastitis associated with erythema nodosum: a case report].

Idiopathic granulomatous mastitis (IMD) is a chronic benign inflammatory disease of the breast which can mimic breast cancer. It is more common in young women of childbearing age and poses a challenge in diagnosis of inflammatory breast tumor. We report the case of a 26-year-old female patient who presented with inflammatory breast. Clinical examination showed apyretic patient with edematized and painless irregular smooth mass in the left breast measuring 4 cm surmounted by crusts and multiples fistulizing scars discharging pus by applying pressure, with mobile ipsilateral axillary adenopathy. The remainder of the physical examination showed inflammatory erythematous patches on both legs. A mammogram plus breast ultrasound was performed followed by biopsy that objectified fibrous mastopathy. Lumpectomy was performed due to the persistence of symptoms. Anatomopathological examination objectified granulomatous mastitis. Etiological research didn't identify a clear cause. Corticotherapy associated with antibiotic therapy was started with complete regression of symptoms after two months.