Journal
JCPSP-JOURNAL OF THE COLLEGE OF PHYSICIANS AND SURGEONS PAKISTAN
Volume 32, Issue 11, Pages 1489-1491Publisher
COLL PHYSICIANS & SURGEONS PAKISTAN
DOI: 10.29271/jcpsp.2022.11.1489
Keywords
Granulomatous mastitis; Corynebacterium; Gram-positive rods; Inflammatory breast disease; Cystic neutrophilic granulomatous mastitis
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Granulomatous lobular mastitis is a rare inflammatory breast disease that can mimic malignancy. It typically occurs in parous or lactating women and can be caused by infection or autoimmune disorders. Cystic neutrophilic granulomatous mastitis is a subtype of granulomatous lobular mastitis that is associated with Gram-positive bacilli infection.
Granulomatous lobular mastitis (GLM) is an infrequent inflammatory breast disease, which can simulate malignancy on the basis of clinical and imaging features. It is typically found in parous or lactating women. The differential diagnosis of granulomatous mastitis includes infections caused by bacterial, fungal or mycobacterial agents, and autoimmune disorders like rheumatoid arthritis, sarcoidosis, giant cell vasculitis, and granulomatosis with polyangiitis. Cystic neutrophilic granulomatous mastitis (CNGM) is a sporadic sub-type of GLM that can be linked with infection with Gram-positive bacilli, specifically, Corynebacterium. It is characterised by lipogranulomas that comprise of cystic spaces lined by neutrophils which may contain Gram-positive rod-shaped bacteria. The majority of cases of GLM are still idiopathic as this pattern of inflammation still remains a mystery. We herein report three cases of CNGM and review the relevant literature.
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