Which CXR finding is typically not associated with pulmonary edema?

Cystic lesions are typically not associated with pulmonary edema. Pulmonary edema primarily manifests through specific radiographic findings, such as prominent pulmonary vessels, Kerley B lines, and perivascular or peribronchial cuffing.

Prominent pulmonary vessels indicate increased pulmonary blood flow and pressure, a common finding in congestive heart failure leading to pulmonary edema. Kerley B lines are thin, horizontal lines seen at the lung bases and are indicative of interstitial edema, which occurs due to fluid accumulation in the interstitial spaces of the lungs. Perivascular and peribronchial cuffing occurs due to edema surrounding the blood vessels and bronchi, further supporting the diagnosis of pulmonary edema.

In contrast, cystic lesions represent a variety of conditions, often unrelated to the increased interstitial fluid accumulation seen in pulmonary edema, and may suggest different pathological processes such as infections, tumors, or congenital abnormalities rather than fluid overload.