Background: Hypertension in the portal vein system stimulates the vascular system to develop a porto-caval collateral system, which occurs by adaptation of the already existing junctions between the portocaval and the systemic circulation to changed conditions or by angiogenesis. Case Report: We present a case of a 42-year-old man with alcoholic cirrhosis of the liver and exacerbation of chronic pancreatitis, whose computed tomography of the abdominal cavity revealed a massive varicoid dilatation of a vein of the spleen with a splenorenal shunt and tortuous dilated venous vessels in the retroperitoneal space and mesentery. Conclusions: The unusual image of the mesenteric and retroperitoneal venous vessels in our patient resulted