门静脉血栓形成是指发生在门静脉主干、肠系膜上静脉、肠系膜下静脉或脾静脉的血栓。门静脉高压(肝硬化)、腹腔感染、腹部手术及外伤、血液处于高凝状态等被认为是继发性门静脉血栓形成的主要原因,无明显诱因者被称为原发性门静脉血栓形成[1]。其临床表现主要以消化道症状为主,发生肠坏死前体征不明显,故临床表现被认为不具有特征性。对门静脉血栓形成的认识随着诊断技术的发展不断在加深,但毕竟是少见病,临床资料少,认识还 Portal venous thrombosis is a type of thrombus that occurs in the main portal vein, the superior mesenteric vein, the inferior mesenteric vein, or the splenic vein. Portal hypertension (cirrhosis), abdominal infection, abdominal surgery and trauma, blood in hypercoagulable state is considered to be the main reason for secondary portal vein thrombosis, no obvious incentive is called primary portal vein thrombosis [1] . The main clinical manifestations of gastrointestinal symptoms, signs of intestinal necrosis was not obvious, so the clinical manifestations are not considered characteristic. Understanding of portal vein thrombosis with the development of diagnostic techniques continue to deepen, but after all, is a rare disease, less clinical information, awareness