Abstract

We encountered a case of acute otitis media caused by non-tuberculous mycobacterial infection. A 13-year-old girl presented with right ear pain and discharge lasting for 1 week despite treatment with a standard antibiotic. Physical examination revealed a small perforation of the right tympanic membrane and swollen external ear canal mucosa. Ear computed tomography showed a soft tissue shadow occupying the right middle ear and the mastoid cavity. Audiometry revealed right sensory hearing loss. She received treatment with eardrops (OFLX), administration of antibiotic (intravenous PIPC 2.0 g/day) and steroid (intravenous dexamethasone sodium phosphate tapering from 6.0 mg/day). Right ear pain, discharge and hearing loss improved. Initial otorrhea cultures yielded non-tuberculous mycobacteria (Mycobacterium fortuitum). After treatment, her symptoms resolved, and she has remained well without evidence of reinfection. On the basis of our experience with this patient, we recommend conservative management (for example, antibiotic administration) for the initial treatment of cases of acute otitis media caused by non-tuberculous mycobacteria.

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