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About: Westermark sign     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatSymptoms, within Data Space : dbpedia.org associated with source document(s)

Type: ThingbroadcasterFuchs' dystrophyyago:Abstraction100002137yago:Clue106643763yago:Cognition100023271yago:Communication100033020yago:Evidence105823932yago:Evidence106643408yago:Indication106797169yago:Information105816287yago:PsychologicalFeature100023100diseaseyago:Sign106646243yago:Symptom114299637yago:WikicatRadiologicSignsyago:WikicatSymptoms New Facet based on Instances of this Class

In chest radiography, the Westermark sign is a sign that represents a focus of oligemia (hypovolemia) (leading to collapse of vessel) seen distal to a pulmonary embolism (PE). While the chest x-ray is normal in the majority of PE cases, the Westermark sign is seen in 2% of patients. Essentially, this is a plain X-ray version of a filling defect as seen on computed tomography pulmonary arteriogram. The sign results from a combination of: