Pulmonary alveolar microlithiasis

Case contributed by Dr Craig Hacking


Worsening SOB. Vietnamese ethnicity.

Patient Data

Age: 50 years
Gender: Male

Diffuse increased density throughout the lungs, of calcific attenuation with a middle to lower zone predominance. On the left medially there is Increased lucency between dense lung parenchyma and ribs.

Case Discussion

The increased lucency between dense lung parenchyma and ribs on the left is known as the black pleura sign.

The patient had a known history of pulmonary alveolar microlithiasis (PAM). His lung function was critically low and restrictive. He was treated successfully a year later with lung transplantation.

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Case information

rID: 53698
Published: 31st May 2017
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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