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Radiographic and CT Findings of Nontuberculous Mycobacterial Pulmonary Infection Caused by Mycobacterium abscessus

Daehee Han1, Kyung Soo Lee1, Won-Jung Koh2, Chin A Yi1, Tae Sung Kim1 and O Jung Kwon2

1 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-Dong, Kangnam-Ku, Seoul 135-710, Korea.
2 Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.



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  		Fig. 1A. —Pulmonary Mycobacterium abscessus infection in 64-year-old woman. Posteroanterior chest radiograph shows reticulonodular opacities throughout both lungs.

 


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  		Fig. 1B. —Pulmonary Mycobacterium abscessus infection in 64-year-old woman. Axial thin-section CT scan (2.5-mm collimation, 70 mA, 120 kVp) obtained at level of main bronchi shows nodules (arrow) smaller than 10 mm in diameter in both lungs.

 


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  		Fig. 1C. —Pulmonary Mycobacterium abscessus infection in 64-year-old woman. CT scan obtained at level of distal bronchus intermedius shows small centrilobular nodules (arrow) with tree-in-bud appearance suggesting bronchiolitis and multiple nodules smaller than 10 mm in diameter.

 


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  		Fig. 2A. —Pulmonary Mycobacterium abscessus infection in 37-year-old woman. Posteroanterior chest radiograph shows large cavity in right upper lung zone surrounded by air-space consolidation inferiorly and apical pleural thickening superiorly. Also note reticulonodular opacities in left upper lung zone and volume loss in upper zones of both lungs.

 


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  		Fig. 2B. —Pulmonary Mycobacterium abscessus infection in 37-year-old woman. Axial thin-section CT scan (2.5-mm collimation, 70 mA, 120 kVp) obtained at level of right upper lobar bronchus shows large cavity surrounded by consolidation in right upper lobe. Also note retracted left upper lobe with parenchymal bands, ground-glass opacity, and consolidation.

 


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  		Fig. 3A. —Pulmonary Mycobacterium abscessus infection in 44-year-old woman. Posteroanterior chest radiograph shows reticulonodular lesions (arrows) in right upper and middle lung zones and left upper lung zone.

 


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  		Fig. 3B. —Pulmonary Mycobacterium abscessus infection in 44-year-old woman. Follow-up radiograph obtained 1 month after specific antibiotic treatment with amikacin, cefoxitin, and clarithromycin shows lung lesions are nearly completely resolved.

 

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