The deep sulcus sign of supine pneumothorax

A pneumothorax locates in the apical region on an erect CXR. The lung edge is often seen along with absence of vascular markings over the pleural space.
On a supine CXR, a pneumothorax is more subtle and locates over the base of the chest producing the so-called 'deep sulcus sign'. This video explains how to detect pneumothoraces on supine films.

[@sdfPZXC]

ty u i never heard of its until the pediatric ward 😅

[@nnnnnnnn9732]

Great explanation thank you so much!!

[@emoniirobinson5739]

Great video. Thank you !!!!

[@zainabalkurdi6175]

It’s very clear
Thank u so much 🌸🙏🏻