Cryptogenic organising pneumonia: atoll sign

Case contributed by Dr Paul Leong

Patient Data

Age: 64
Gender: Male
Modality: CT

There is an ovoid lesion in the right lower lobe which demonstrates central ground-glass density surrounded by peripheral consolidation. The appearances are consistent with an 'atoll-sign', which is seen in COP. 

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Case Information

rID: 26531
Case created: 27th Dec 2013
Last edited: 26th Sep 2015
System: Chest
Inclusion in quiz mode: Included

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