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World J Surg ; 43(7): 1737-1745, 2019 07.
Article in English | MEDLINE | ID: mdl-31049604

ABSTRACT

BACKGROUND: Granulomatous mastitis (GM) is an inflammatory breast disease of unknown aetiology. It poses diagnostic and therapeutic challenges with myriad forms of clinical presentation, varying results to treatments and propensity to recur. This study aims to look at clinical and treatment factors that predispose to recurrence of GM. METHODS: We performed a retrospective review of 113 patients in our unit with histologically proven GM from 2006 to 2016. Demographic, clinical, treatment and outcomes data were collected and analysed. RESULTS: Eighty-nine patients were treated with antibiotics (78.8%), 79 (69.9%) with steroids and 23 (20.4%) patients underwent surgery. Twenty (17.7%) patients had recurrence. Patients who presented with inflammatory signs and symptoms had increased odds of having subsequent recurrence: skin changes (1.50), pain (2.00), fistula (4.39) and antibiotic treatment (6.65). Four patients (20%) with recurrence had positive bacterial cultures. All 4 grew Corynebacterium. Patients with Corynebacterium infection had a 2.64 times higher risk of recurrence. Surgery did not preclude recurrence. There was a 70% (7/10) penicillin resistance rate in our patients with positive cultures for Corynebacterium. CONCLUSION: Initial presentation with inflammatory signs and symptoms may confer increased risk of recurrence, warranting closer monitoring. Corynebacterium infection may play a part as a causative factor and risk factor for recurrence. Non-penicillin antibiotics should be considered as first-line antibiotics for patients presenting with inflammatory changes. Further prospective studies with larger patient populations might reveal information on the aetiology of GM and result in the development of a more standardized and effective treatment regimen.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Corynebacterium Infections/drug therapy , Granulomatous Mastitis/drug therapy , Granulomatous Mastitis/surgery , Steroids/therapeutic use , Adult , Corynebacterium Infections/complications , Female , Granulomatous Mastitis/microbiology , Humans , Middle Aged , Penicillin Resistance , Recurrence , Retrospective Studies , Singapore , Treatment Outcome
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