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1、肠系膜上静脉血栓形成 Superior Mesenteric Venous Thrombosis (SMVT) Date1消化内科General views Thrombosis is the formation of a clot or thrombus inside a blood vessel Injury to the vessels wall (trauma, infection, sclerotic lesion) Slowing or stagnation of blood flow past the point of injury. Hypercoagulability (ge
2、netic deficiencies or autoimmune disorders, DM, tumor). Date2消化内科Classification 2 distinct forms Venous thrombosis Deep venous thrombosis (with or without pulmonary embolism) Portal vein thrombosis (SMV, IMV) Renal vein thrombosis Hepatic vein thrombosis (Budd-Chiari syndrome) Paget-Schroetter disea
3、se (upper extremity vein) Cerebral venous sinus thrombosis Thoracic outlet syndrome (Subclavian Vein Thrombosis unrelated to trauma) Arterial thrombosisDate3消化内科 2 distinct forms Venous thrombosis Arterial thrombosis 1.Stroke (either thrombotic or embolic) 2.Myocardial infarction (usually coronary t
4、hrombosis due to rupture of an atherosclerotic plaque) 3.Thoracic outlet syndrome (may precipitate arterial thrombosis as well as venous) Date4消化内科 肠系膜上静脉(SMV)血栓形成是指沿SMV主干 的血栓形成及其蔓延，这是一种临床上较少见 的急腹症。绝大部分病例仅靠剖腹探查得以明 确诊断，病死率高达20%50%。 原发或继发性肠系膜上静脉血栓约占肠系膜静 脉血栓95%，约占肠道缺血事件中5-15%。Date5消化内科IMVSplenic veinSM
5、VPVThe pancreas and duodenum from behind Date6消化内科Date7消化内科经胰钩突层面（CT增强扫描） 1.下腔静脉 2.右肾静脉 3.左肾静脉 4.降主动脉 5.肠系膜上静脉 6.肠系膜上动脉 7.钩突 8.胰头 9.十二指 肠降部 10.降结肠 11.空肠 12.胆总管（箭头所示） Date8消化内科经肠系膜上动脉层面（CT增强扫描） 1.下腔静脉 2.左肾静脉 3.降主动脉 4.十二指肠降部 5.胰头 6.脾静脉 7.胃 8.右肾动脉 9.左肾动脉 10.降结肠 11.肠系膜上动脉（箭头所示） 12.肠系膜上静脉 Date9消化内科Date10消化内科
