Anomalous continuation of vena cava inferior as the azygos vein, suggesting mediastinal mass.
D000328:Adult; D001401:Azygos Vein / Q000002:abnormalities* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011859:Radiography; D014682:Vena Cava, Inferior / Q000002:abnormalities* / Q000000981:diagnostic imaging