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CT Findings in 14 Patients with Mycobacterium chelonae Pulmonary Infection

¹ Department of Radiology, University of Colorado Health Sciences Center, 4200 E. 9th Ave., Box A030, Denver, CO 80262.
² Present address: Department of Radiology, University of South Florida College of Medicine, Box 17, 12901 Bruce B. Downs Blvd., Tampa, FL 33612.
³ National Jewish Medical and Research Center, 1400 Jackson St., Denver, CO 80206.

OBJECTIVE. The purpose of this report is to describe helical and high-resolution CT findings in 14 patients with pulmonary infection caused by Mycobacterium chelonae, a nontuberculous mycobacterial species that has become increasingly recognized as a rare but significant cause of chronic lung infection in immunocompetent patients.

CONCLUSION. Bronchiectasis, nodules, and consolidation are the most common CT features of M. chelonae pulmonary infection. Cavities are less common. These CT findings resemble those reported for Mycobacterium avium complex. In this study, M. chelonae pulmonary infection occurred exclusively in middle-aged and older women.

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