Abstract
Increases in pressure in the pulmonary arteries or pulmonary veins may be the result of avariety of underlying diseases. Noninvasive imaging plays acrucial role not only for identification, but also for differential diagnosis. This article provides acomparative review of the signs of increased pulmonary arterial and pulmonary venous pressure in chest X‑ray and computed tomography (CT). Typical signs of apulmonary arterial or pulmonary venous pressure increase in chest X‑ray and CT facilitate diagnosis of pulmonary hypertension (e.g., enlargement of central pulmonary arteries) and interstitial or alveolar pulmonary edema (e.g., Kerley lines/thickened interlobular septae or butterfly edema). Abasic understanding of imaging findings and underlying pathophysiology helps in establishing the differential diagnosis. Chest X‑ray and CT are essential for diagnosis of patients with suspected increased pulmonary arterial or pulmonary venous pressure.
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