Vol. 4, Issue 3, Part A (2021)

Abstract: Cystic neutrophilic granulomatous mastitis [CNGM] is a recently characterized entity, with specific histopathological details that differentiate it from other types of chronic idiopathic mastitis. The presence of gram-positive bacilli within cystic-like spaces surrounded by neutrophils, in a context of suppurative granulomatous inflammation, define this entity. The importance of its recognition in the diagnostic report lies in its association with infection by corynebacterial species, so that treatment with antibiotics can be targeted. Here we present a case of CNGM of left breast in a 34-year-old female.