Tips to diagnose Pneumothorax

Fact: The broncho-pulmonary tree arises at the hilum and spread out to the periphery in a     radiating manner.

Tip: As we follow the broncho-pulmonary markings, there is lung tissue. when the broncho-pulmonary markings disappear and there is a line of demarcation between lung tissue and clear zone, there is Pneumothorax.

See the images below.

(click on the image to enlarge)