Two-year old patient who underwent split liver transplantation for criptogenic cirrhosis. Due to the development of refractory right pleural effusion, on postoperative day 20 a trans-jugular cavography was performed demonstrating a venous outflow obstruction due to stenosis of the vena cava at the site of the anastomosis between the left hepatic vein of the graft and the vena cava of the recipient (1). Balloon dilation of the stenosis was performed (2) with normalization of caval venous blood pressure and complete resolution of the clinical picture.