[Genetically determined thrombophilia as a cause of acute abdomen].

We report the case of a young patient with unknown, genetically caused thrombophilia in whom thrombosis of the main portal vein developed as well as of the hepatic branches and the superior mesenteric vein with necrosis of the small intestine. Partial resection of the small intestine was performed and conservative management of portal vein thrombosis with a therapeutic dose of LMWH was indicated. Key words: thrombophilia - thrombosis of the portal vein.