Flashcards in Fleischner Terms Deck (6)
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1
Q
Define:
Air bronchogram
A
An air bronchogram is a pattern of air-filled (low-attenuation) bronchi on a back- ground of opaque (high-attenuation) air- less lung.
2
Q
Describe finding:
A
Air bronchogram
3
Q
Define:
Air crescent
A
A collection of air in a crescentic shape that separates the wall of a cavity from an inner mass. The air crescent sign is often considered characteristic of either Aspergillus colo- nization of preexisting cavities or re- traction of infarcted lung in angioinvasive aspergillosis
4
Q
Describe finding:
A
Air crescent
5
Q
Define:
Apical cap
A
Homogenous soft tissue attenuation capping the extreme apex of the lung. Usually caused by intrapulmonary and pleural fibrosis.
6
Q
Describe finding:
A
Apical cap