Journal Article

Clinical and Microbiologic Outcomes in Patients Receiving Treatment for <i>Mycobacterium abscessus</i> Pulmonary Disease

Julie Jarand, Adrah Levin, Lening Zhang, Gwen Huitt, John D. Mitchell and Charles L. Daley

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 52, issue 5, pages 565-571
Published in print March 2011 | ISSN: 1058-4838
Published online March 2011 | e-ISSN: 1537-6591 | DOI:
Clinical and Microbiologic Outcomes in Patients Receiving Treatment for Mycobacterium abscessus Pulmonary Disease

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Background. Mycobacterium abscessus can produce a chronic pulmonary infection for which little is known regarding optimal treatment and long-term outcomes.

Methods. We performed a retrospective observational study (2001–2008) including all patients who met American Thoracic Society criteria for M. abscessus pulmonary disease. Our aim was the evaluation of clinical and microbiologic outcomes in patients treated with combined antibiotic and surgical therapy, compared with antibiotic therapy alone.

Results. A total of 107 patients were included in the analysis. Patients were predominantly female (83%) and never-smokers (60%), with a mean age of 60 years. Fifty-nine (55%) of 107 patients had coexistent or previous history of Mycobacterium avium complex pulmonary infection. High-resolution chest CT showed bronchiectasis and nodular opacities in 98% of patients and cavities in 44%. Sixy-nine (46 medical, 23 surgical) patients were followed up for a mean duration of 34 months (standard deviation, 21.1 months, range, 2–82 months). Cough, sputum production, and fatigue remained stable, improved, or resolved in 80%, 69%, and 59% of patients, respectively. Twenty (29%) of 69 patients remained culture positive, 16 (23%) converted but experienced relapse, 33 (48%) converted to negative and did not experience relapse, and 17 (16%) died during the study period. There were significantly more surgical patients than medical patients whose culture converted and remained negative for at least 1 year (57% vs 28%; P = .022).

Conclusions. Patients with M. abscessus pulmonary disease who are treated with multidrug antibiotic therapy and surgery or antibiotic therapy alone had similar clinical outcomes. However, surgical resection, in addition to antibiotics, may offer a prolonged microbiologic response.

Journal Article.  3982 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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