title: Hemiazygous vein thrombosis as a cause of unexplained left-sited pleural effusion. A new syndrome?
abstract: In seven cases with pleural effusion transosseal azygography has been performed, in order to specify any cause for the fluid accumulation that could be related to the azygous system. In 4 cases azygography appeared normal and further laboratory work-up revealed collagen disease, heart failure and lung cancer. In the remaining 3 cases (2 with recent myocardial infarction and 1 with unstable angina) azygography discerned thrombosis of the hemiazygous vein. It is suggested that in cases with an otherwise unexplained left-sited thoracic transudate a thrombosis of the hemiazygous vein may be visualized by transosseal azygography.
mesh_terms: D000368:Aged; D001401:Azygos Vein / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D010996:Pleural Effusion / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography; D013927:Thrombosis / Q000150:complications* / Q000000981:diagnostic imaging