Question

which of the following features is least likely to be seen in advanced emphysema?
please select your answer...
a decreased vascular markings in hyperlucent areas
b narrowed cardiac silhouette
c elevated hemidiaphragms
d flattened diaphragms and increased retrosternal airspace

Explanation:

In advanced emphysema, the lungs are over - inflated. This leads to flattened diaphragms (not elevated) as the lungs push the diaphragm down, increased retrosternal airspace, decreased vascular markings in hyperlucent (over - inflated) lung areas, and a narrowed cardiac silhouette (because the over - inflated lungs push the heart and make its silhouette appear narrower). Elevated hemidiaphragms are not a feature of advanced emphysema.

Answer:

C. Elevated hemidiaphragms