Pulmonary Mycobacterium avium complex infection

Case contributed by Dr Bruno Di Muzio


Chronic productive cough.

Patient Data

Age: 75 years
Gender: Female

Chest radiographs

Patchy nodular opacities scattered thought both upper lobes, lingular region, and right middle lobe. Lucencies in both upper lobes may represent emphysematous changes. No pulmonary consolidation or pleural effusions. Cardiomediastinal contours are normal. Thoracic bony cage is unremarkable.  

Bronchiectasis, bronchial wall thickening, centrilobular nodules in a tree in bud appearance, and mucous plugging are noted scattered through both upper lobes, right middle lobe, and superior segments of the lower lobes. Pleural scarring in both apex. Centrilobular emphysematous changes. 

Case Discussion

This case shows typical features to suggest MAC: subacute/chronic history, elderly female patient, centrilobular nodules, bronchiectasis, and mucus plugging with the involvement of the lingular segments and right middle lobe. TB would be a differential, but it usually does not have bronchiectasis in this distribution as a feature. 

Mycobacterium avium complex was isolated. 

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Case information

rID: 49170
Published: 19th Nov 2016
Last edited: 21st Nov 2016
System: Chest
Inclusion in quiz mode: Included

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