title: [Compensative dilatation of the vena azygos by abnormalities of the vena cava inferior - a contribution to the differential diagnosis of the tumorsuspected right tracheobronchial angle (author's transl)].
abstract: Report on 2 patients, with a mediastinal enlargement at the right tracheobronchial angle revealing an ectasis of the orifice of vena-azygos. It could be shown that the enlargement of the vena azygos ist due to an increase of the flow-volume, caused by an abnormal embryonic drainage of the vena cava inferior into the vena azygos. The diagnostic possibilities for differentiation from vascular and nonvascular space-occupying processes in that region are discussed. An exact diagnosis is possible by angiography.
mesh_terms: D000293:Adolescent; D000792:Angiography; D001401:Azygos Vein; D003937:Diagnosis, Differential; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014056:Tomography, X-Ray; D014652:Vascular Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging; D014682:Vena Cava, Inferior / Q000002:abnormalities*
vernacular_title: Kompensatorische Weitstellung der Vena azygos bei Fehlanlage der unteren Hohlvene - Ein Beitrag zur Differentialdiagnose des tumor-suspekten rechten tracheobronchialwinkels