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肠系膜静脉血栓（ＭＶＴ）是罕见外科急腹症，占住院病人００１％～０１７％，多见于５０～６０岁男性。分继发性ＭＶＴ和原发性ＭＶＴ。无特异性临床表现，腹痛、血便为常见症状，发热及腹膜炎表现常提示肠坏死。血ＷＢＣ多＞１５０×１０９／Ｌ，血尿淀粉酶多正常，Ｘ线常为肠梗阻表现，部分可见孤立肠袢，胃肠造影部分可见拇指痕征。Ｂ超能早期发现腹水症。ＣＴ无特异性表现。同位素扫描病变肠段同位素排泄明显延长，提示肠壁缺血。血管造影特异表现为：①造影剂返流征象；②肠系膜上动脉及其分支呈痉挛表现，直动脉变细；③动脉相延长＞４０秒；④肠系膜上静脉显影＞４０秒；⑤肠壁增厚，肠管内有造影剂。腹腔镜可明确病变性质及范围。ＭＶＴ术中表现①受累小肠及系膜为红色栓塞；②大的肠系膜动脉搏动存在，小动脉未闭塞；③病变肠系膜静脉内有血栓存在，切开时血栓自静脉内溢出。肠切除是治疗ＭＶＴ最有效方法，但复发率２０％～３０％，６０％位于吻合口，术后应用抗凝治疗可降低复发及死亡率。
Mesenteric venous thrombosis (MVT) is a rare surgical acute abdomen, accounting for 0 01% ~ 0 17% of hospitalized patients, more common in men 50 to 60 years old. Sub-secondary MVT and primary MVT. No specific clinical manifestations, abdominal pain, bloody stools are common symptoms, fever and peritonitis often suggest intestinal necrosis. Blood WBC more than 15 0 × 109 / L, hematuria and amylase more than normal, X-ray often manifested intestinal obstruction, part of the isolated gut can be seen, part of gastrointestinal contrast can be seen signs of thumb marks. B super early detection of ascites disease. CT no specific performance. Isotope scanning lesion intestinal segment isotope excretion was significantly prolonged, suggesting intestinal ischemia. Angiography-specific manifestations as follows: ① contrast agent reflux signs; ② superior mesenteric artery and its spasm showed the performance of branches, the narrowing of the straight artery; ③ arterial phase> 40 seconds; ④ superior mesenteric vein imaging> 40 seconds; Thick, there is contrast agent in the intestine. Laparoscopy can determine the nature and extent of lesions. MVT intraoperative manifestations ① involving the small intestine and mesangial red embolism; ② large mesenteric artery pulsation exists, arterioles are not blocked; ③ lesions in the mesenteric vein thrombosis exist, thrombosis incision from the vein overflow. Intestinal resection is the most effective method of treatment of MVT, but the recurrence rate of 20% to 30%, 60% located in the anastomosis, postoperative anticoagulant therapy can reduce recurrence and mortality.