Presentation
ICU patient. Decreased oxygenation.
Patient Data
Age: Young adult
Gender: Male
From the case:
Pneumothorax and skin fold
Frontal

Right apical linear density (white line) with absence of lung markings laterally in keeping with a small pneumothorax. Just medial to it is a curvilinear lucency (black line) representing a skin fold.
Left lower lobe interstitial opacities stable from the CXR from 1 day earlier. Support lines and tubes remain well positioned.
Case Discussion
Rare to see a subtle PTX and skin fold in the same CXR (and on the same side).
Case courtesy of Dr Nivene Saad.