In this paper we want to highlight the importance importance of Warren Shunt- (anastomosis of the splenic vein and the left renal vein) was performed in order to lower the PHT, and prevent the risk of gastrointestinal bleeding. Children with CTPV often manifest with gastroesphageal variceal bleeding which can be a life-threatening condition for young patients. Studies show that CTPV in cases of children may occur because of inherited or acquired prothrombotic disorders, abdominal infections. Our research team presents the case of a 22 years old, male patient, N. S. who had cavernous transformation of the portal vein at 2 years old and our case presentation presents the benefits of a surgical Warren Shunt- (anastomosis of the splenic vein and the left renal vein) in order to lower the PHT, and prevent the risk of gastrointestinal bleeding. In the case we present this type of surgical intervention was life saving and improved the quality of life of our patient.