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Am J Clin Pathol. 2011 Sep;136(3):424-7. doi: 10.1309/AJCP1W9JBRYOQSNZ.

Cystic neutrophilic granulomatous mastitis: an underappreciated pattern strongly associated with gram-positive bacilli.

Author information

1
Dept of Pathology, Baptist Hospital, Miami, FL 33176, USA.

Abstract

Although granulomatous lobular mastitis is associated with gram-positive bacilli such as Corynebacterium, this association is not well known. We report 3 cases of mastitis caused by gram-positive bacilli. All 3 abscesses were suppurative with distinct enlarged cystic spaces in which rare gram-positive bacilli were identified. Two cases were also granulomatous. Cultures in all 3 cases were negative. All 3 patients recovered after biopsy and tetracycline-based therapy. Infection in the breast by gram-positive bacilli is associated with a distinct histologic pattern, including cystic spaces in the setting of neutrophilic/granulomatous inflammation that can be recognized and should prompt careful search for the organism within enlarged vacuoles.

PMID:
21846918
DOI:
10.1309/AJCP1W9JBRYOQSNZ
[Indexed for MEDLINE]

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