title: Unusual clinical presentation of a patient with absent inferior vena cava.
abstract: We report a case of an absent inferior vena cava that presented clinically in an unusual manner. We believe this condition was caused by a combination of congenital and acquired factors. With the advent of modern imaging techniques such cases are being found with increasing frequency.
mesh_terms: D000293:Adolescent; D003097:Collateral Circulation; D006801:Humans; D008297:Male; D012082:Renal Veins; D012187:Retroperitoneal Space / Q000098:blood supply*; D013927:Thrombosis / Q000150:complications; D014555:Urination Disorders / Q000209:etiology; D014682:Vena Cava, Inferior / Q000002:abnormalities*