Round atelectasis

Case contributed by Dr Omar Giyab


Patient suffering from psoriasis, and chronic myeloid leukemia.

Patient Data

Age: 65
Gender: Male

Left sided pleural effusion and a lower long lobe mass was seen on an exam that was initially performed to rule out pneumonia.


A CT exam was performed to further characterise the leasion seen on the X-ray. On CT the leasion showed features of round atelectasis.

Case Discussion

Differential diagnosis between round atelectasis and lung mass can be difficult. Comet tail sign, together with pleural effusion are suggestive features of round atelectasis.

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Case information

rID: 28105
Case created: 10th Mar 2014
Last edited: 16th Dec 2015
System: Chest
Inclusion in quiz mode: Included

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