Case contributed by Dr Ahmed Abdrabou


Recurrent bouts of cough, expectoration, dyspnea and fever.

Patient Data

Age: 45 years
Gender: Male

Localized varicose bronchiectasis in the right upper lobe with a cavitary lesion showing a soft tissue nodule inside surrounded by a crescent of air.

Incidental large hypodense hepatic lesion in segments 7-8 and bilateral elastofibroma dorsi in the soft-tissue window.

Annotated image

The green arrow refers to the air crescent sign.

Case Discussion

Bronchiectasis with the formation of a cavity is one of the predisposing factors that aids in colonization of fungus Aspergillus fumigatus formation of aspergilloma.

The fungus ball within the air filled cavity causes the air crescent sign.

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Case information

rID: 44592
Published: 4th Jun 2017
Last edited: 14th Aug 2019
System: Chest
Inclusion in quiz mode: Included

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