Aortic Rupture

Note the markedly widened mediastinum in the AP view (below), which is suggestive of aortic aneurysmal/dissection disease. The CTs presented below show the “snowman” sign depicting the aneurysm, filling defects, and and extravasation.

RUL Collapse

This patient has suffered complete collapse of the right upper lobe. Note the opaque, atelectatic right upper lobe projecting over the superior right hemithorax. This image is a good example of the “S-sign” of Golden: The displaced minor fissure resembles...

RML Collapse

This patient has suffered complete collapse of the right middle lobe. Note the opaque, atelectatic right middle lobe projecting over the mid right hemithorax. The collapsed right middle lobe also demonstrates the “silhouette” sign; in this case, part of the adjacent...

RLL Collapse

This patient suffered complete collapse of the right lower lobe. The major fissure is clearly displaced inferiorly, the atelectatic lobe projects as a flat opacity, and the right hemidiaphragm is “silhouetted” (see below). Indirect signs of atelectasis...