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Turvey S.L.,University of Alberta | Tyrrell G.J.,University of Alberta | Tyrrell G.J.,The Provincial Laboratory for Public Health Microbiology | Hernandez C.,University of Alberta | And 3 more authors.
International Journal of Infectious Diseases | Year: 2017

A 67-year-old man with significant smoking history presented with fever, unintentional weight loss, night sweats, productive cough, and progressive dyspnea. Multiple respiratory specimens grew Mycobacterium branderi. Computed tomography scanning of the chest revealed a cavitary right upper lung lesion. Bronchoscopy and thoracoscopic biopsy were negative for malignancy but showed necrotizing granulomatous inflammation, which was culture negative. Due to clinical and radiologic progression despite therapy with clarithromycin, ethambutol and moxifloxacin, the lesion was surgically resected and the patient's symptoms resolved. Mycobacteria were seen in histopathology but did not grow from resected tissue. The patient received an additional 6 months of medical therapy and remains asymptomatic 1 month after completing antimicrobials. Cases of M. branderi causing human infection are very rarely reported. This is a novel case of multi-drug resistant M. branderi pulmonary infection in an apparently immunocompetent patient, progressive despite medical therapy and requiring surgical resection for definitive management. © 2017 The Author(s)

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