The terms "butterfly," "bat's wings," "sunburst," and "fan-shaped" are all descriptions of the radiographic appearance of pulmonary edema, described by which of the following?

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Pulmonary edema typically presents with an interstitial pattern distally, as fluid accumulates in the interstitial spaces, and an air-space pattern proximally, as the fluid moves into the alveoli. The descriptive terms of "butterfly," "bat's wings," "sunburst," and "fan-shaped" all refer to this classic appearance. Choice A describes an opposite pattern, which is not typical of pulmonary edema. Choice C describes an interstitial pattern throughout the lung, which is not specific to pulmonary edema. Choice D describes an air-space pattern throughout the lung, which is also not specific to pulmonary edema.

The Terms "Butterfly," "Bat's Wings," "Sunburst," and "Fan-Shaped" Are All