A large pseudolesion in the left lobe of the liver caused by inferior venacaval obstruction secondary to metastatic retroperitoneal lymphadenopathy

A rare case with a large pseudolesion in the left lobe of the liver observe d on early phase of incremental dynamic computed tomography (CT) caused by inferior vena caval obstruction is presented. Decreased portal perfusion du e to increased volume of systemic venous inflow into the left lobe via para umbilical venous system may be its underlying hemodynamic change. The etiol ogy of this pseudolesion was successfully confirmed by conventional CT with intravenous contrast medium injection via superficial vein of lower extrem ity. (C) 2000 Elsevier Science Ltd. All rights reserved.