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  • Title: Mycobacterium abscessus infections in lung transplant recipients: the international experience.
    Author: Chernenko SM, Humar A, Hutcheon M, Chow CW, Chaparro C, Keshavjee S, Singer LG.
    Journal: J Heart Lung Transplant; 2006 Dec; 25(12):1447-55. PubMed ID: 17178340.
    Abstract:
    BACKGROUND: The clinical significance of Mycobacterium abscessus infection in the lung transplant population is not well understood. METHODS: An international survey was performed to determine the incidence and clinical outcomes of M abscessus infections before and after lung transplantation. RESULTS: Thirty-one (50%) of the 62 transplant centers affiliated with the International Society of Heart and Lung Transplantation responded to the survey. Of 5,200 transplants performed, 17 patients (0.33%) (M/F, 12:5) were identified with M abscessus after transplantation. Two patients had respiratory colonization before lung transplantation. Post-transplantation M abscessus infections occurred in the pulmonary allograft in 12, in skin/soft tissue in 3, or both in 2. Median time to diagnosis after transplantation was 18.5 months (range, 1-111 months). Therapies included multiple antibiotics in 16, surgical débridement in 2, interferon-gamma in 1, or no therapy owing to presumed colonization in 1. Eleven (73%) of 16 treated patients had a radiologic or microbiologic response to treatment. Concurrent infections were common, with Aspergillus (n = 8) and Pseudomonas aeruginosa (n = 5) most frequently seen. Death in 2 patients was attributed to M abscessus. Ten of 17 patients are alive and considered cured. CONCLUSIONS: M abscessus infection in the lung transplant recipient is uncommon and challenging; however, successful treatment can occur. Prolonged combination anti-microbial therapy is required for pulmonary involvement, and surgical débridement is recommended for cutaneous lesions. Concurrent infections are common and may contribute to mortality in this immunosuppressed population.
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