Pulmonary EmbolismCreated OnMay 4, 2020Last Updated OnMay 4, 2020byadmin You are here: Main Radiology Pulmonary Embolism < All Topics Table of Contents Classic radiographic findings (suggestive of PE but rarely seen): 1) Hampton hump- pulmonary infarction include a wedge-shaped, pleura-based triangular opacity with an apex pointing toward the hilum 2) Westermark sign – decreased vascularity. Usually they will appear normal or with common radiographic abnormalities including atelectasis, pleural effusion, parenchymal opacities, and elevation of a hemidiaphragm. Left mid/upper zone regional lucency with truncation of normal left-sided pulmonary markings. Bilateral pleural effusions. Theory behind the sign is either obstruction of the pulmonary artery or distal vasoconstriction in hypoxic lung A posteroanterior chest radiograph showing a peripheral wedge-shaped infiltrate caused by pulmonary infarction secondary to pulmonary embolism. Hampton hump is a rare and nonspecific finding. Further Investigation: CT Pulmonary Angiogram (CTPA) – Scanning the pulmonary arteries. It will show filling defects within the pulmonary vasculature with acute pulmonary emboli. This axial CTPA shows a typical saddle pulmonary aneurysm (Hypodensity straddles the bifurcation of pulmonary trunk, extending into both right and left pulmonary arteries) *Some of the image photo is taken from web, we do not own this, it’s for knowledge sharing purpose.
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