Persistent, sterile necrotizing granulomatous dermatitis following treatment of 20-year Mycobacterium marinum infection

This is the authors' abstract. We don't add key points for this paper.

Mycobacterium marinum is a rare cause of human infection, with an annual incidence of 2.7 per 100,000 in the United States.1 The slow-growing organism inhabits aqueous environments, infecting injured skin. Sources of exposure include aquariums, contact with marine animals, and salty or brackish water. M marinum infection is typically confined to the skin and soft tissues in immunocompetent individuals.2 Most incidents (90%) are in the upper extremities.3 Poor sensitivity of bacterial culture and lack of a standardized antibiotic regimen make diagnosis and treatment difficult.