[Spontaneous resolution of extensive superior mesenteric and portal vein thrombosis. A case report].

We present a case of subacute extensive thrombosis of the superior mesenteric vein, the venous branches of the jejunal vein, the portal vein at the hilum and its intrahepatic branches, with complete recanalization of the blood flow in the affected vessels without thrombolytic treatment. We provide a detailed description of the clinical and etiological investigations and outcome.