title: Caval agenesis with a hypoplastic left kidney in a patient with trauma on warfarin for deep vein thrombosis.
abstract: Congenital anomalies of the inferior vena cava (IVC) are rare, but recognized, causing deep venous thrombosis. We present a case of a 50-year-old patient with trauma who suffered an intracranial hemorrhage secondary to a fall while on anticoagulation for deep vein thromboses. Venous return from the lower extremities was determined to be through dilated lumbar venous collaterals into the azygous and hemiazygous systems. A second interesting anatomic finding was a hypoplastic left kidney.
authors.affiliation: Department of Surgery, Lehigh Valley Health Network, Allentown, PA 18105, USA.
authors.forename: Ryan A
authors.initials: RA
authors.lastname: Lawless
authors.forename: Dale A
authors.initials: DA
authors.lastname: Dangleben
mesh_terms: D000058:Accidental Falls; D058186:Acute Kidney Injury / Q000209:etiology; D000925:Anticoagulants / Q000627:therapeutic use*; D001401:Azygos Vein / Q000473:pathology / Q000503:physiopathology; D003097:Collateral Circulation; D004108:Dilatation, Pathologic; D006801:Humans; D020198:Intracranial Hemorrhage, Traumatic / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D007668:Kidney / Q000002:abnormalities*; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D010690:Phlebography; D012039:Regional Blood Flow; D054079:Vascular Malformations / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D014682:Vena Cava, Inferior / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000503:physiopathology; D020246:Venous Thrombosis / Q000175:diagnosis / Q000188:drug therapy* / Q000209:etiology / Q000503:physiopathology; D014859:Warfarin / Q000627:therapeutic use*
chemical_list: D000925:Anticoagulants; D014859:Warfarin