Radiographic signs sometimes observed in pulmonary embolism

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Presentation transcript:

Radiographic signs sometimes observed in pulmonary embolism Radiographic signs sometimes observed in pulmonary embolism. Panel A: Westermark sign with oligemia of the right hemithorax relative to the right. VQ scan revealed an isolated perfusion defect of the right lung. Panels B and C are CT angiogram images revealing a saddle and right main pulmonary arterial embolus. Despite the massive appearance on CT, the patient was not in shock, and improved on heparin alone. A CT scan done 5 days later revealed clot only at the segmental level. Source: Pulmonary Embolic Disorders: Thrombus, Air, and Fat, Principles of Critical Care, 4e Citation: Hall JB, Schmidt GA, Kress JP. Principles of Critical Care, 4e; 2015 Available at: http://accessanesthesiology.mhmedical.com/DownloadImage.aspx?image=/data/books/1340/fig-39-03.png&sec=80031489&BookID=1340&ChapterSecID=80031468&imagename= Accessed: December 20, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved