XXXX presenting as a spontaneous pneumothorax.

@entity1143 @entity1 @entity662 @entity1353 @entity3620
@entity3620 ( @entity3620 ) is thought to arise from the mesothelial cells that line the @entity1143 . Most @entity1 initially experience the insidious onset of @entity662 or @entity1353 and have a history of asbestos exposure. @entity3620 rarely presents as spontaneous pneumothorax. We report two male @entity1 who presented with a spontaneous hydropneumothorax. One was exposed to asbestos and the other was not. Computed tomography showed tiny nodules with @entity1143 . They both underwent @entity1143 cytology and/or pleural biopsy. Therefore, the pathological diagnosis of @entity3620 was obtained in both cases. We also reviewed 16 Japanese @entity3620 cases with pneumothorax including our two @entity1 . More than half of the @entity1 suffered from pneumothorax repeatedly. We emphasize the need to obtain a pathological diagnosis of @entity1143 cytology and/or pleural biopsy in older @entity1 presenting with a spontaneous hydropneumothorax.
