Symptomatic interrupted inferior vena cava: report of a case presenting with haematochezia.

Interrupted inferior vena cava (IVC) is a rare developmental defect. IVC interruption is usually accompanied with azygos and hemiazygos continuation, and is asymptomatic. Here, we report the imaging findings of a patient with an interrupted IVC with diffuse collaterals between the infrarenal IVC and large renal veins, left gonadal, and perirectal haemorrhoidal-portal collateral veins with associated haematochezia. Depending on the haemodynamic changes, interrupted IVC may cause possible different clinical findings as presented here.