急性肠系膜上静脉血栓形成的诊断与治疗

目的加深对急性肠系膜上静脉血栓形成(AMVT)导致急腹症严重性的认识,探讨提高疗效的措施.方法对13例AMVT临床特点、治疗方法和效果进行分析比较.结果入院均诊断为急腹症,但术前能确诊仅2例,拟诊1例,行小肠部分切除11例,其中小肠广泛切除3例,仅作剖腹探查2例.治愈10例,死亡3例.随诊3个月～14年,无复发,无短肠综合征发生.结论AMVT临床表现无特异性,术前确诊困难.腹痛与腹部体征不符、WBC大于20×109/L时应警惕本病.彩色多普勒对诊断有较大帮助.充分认识此病,争取早期诊断及时手术是提高疗效关键,术后抗凝溶栓可防止复发.

Cerebral venous thrombosis and heparin-induced thrombocytopenia in an 18-year old male with severe ulcerative colitis

The risk of thromboembolism is increased in inflammatory bowel disease and its symptoms may be overlooked. Furthermore, its treatment can be complex and is not without complications. We describe a case of an adolescent boy who developed a cerebral sinus venous thrombosis during a relapse of his ulcerative colitis and who, while on treatment with heparin, developed heparin-induced thrombocytopenia (HIT). The treatment was then switched to fondaparinux, a synthetic and selective inhibitor of activated factor .

Hospitalized ulcerative colitis patients have an elevated risk of thromboembolic events

AIM: To compare thromboembolism rates between hospitalized patients with a diagnosis of ulcerative colitis and other hospitalized patients at high risk for thromboembolism. To compare thromboembolism rates between patients with ulcerative colitis undergoing a colorectal operation and other patients undergoing colorectal operations. METHODS: Data from the National Hospital Discharge Survey was used to compare thromboembolism rates between (1) hospitalized patients with a discharge diagnosis of ulcerative colitis and those with diverticulitis or acute respiratory failure, and (2) hospitalized patients with a discharge diagnosis of ulcerative colitis who underwent colectomy and those with diverticulitis or colorectal cancer who underwent colorectal operations. RESULTS: Patients diagnosed with ulcerative colitis had similar or higher rates of combined venous thromboembolism (2.03%) than their counterparts with diverticulitis (0.76%) or respiratory failure (1.99%), despite the overall greater prevalence of thromboembolic risk factors in the latter groups. Discharged patients with colitis that were treated surgically did not have signifi cantly different rates of venous or arterial thromboembolism than those with surgery for diverticulitis or colorectal cancer.CONCLUSION: Patients with ulcerative colitis who do not undergo an operation during their hospitalization have similar or higher rates of thromboembolism than other medical patients who are considered to be high risk for thromboembolism.

Portal venous gas and thrombosis in a Chinese patient with fulminant Crohn’s colitis: A case report with literature review

Ever since its earliest reports, portal venous gas (PVG) has been associated with numerous intraabdominal catastrophes and has served as an indication for urgent surgical exploration. It is traditionally regarded to be an ominous finding of impending death, with highest mortality reported in patients with underlying bowel ischemia. Today, computed tomography has demonstrated a wider range of clinical conditions associated with PVG, some of which are ‘benign’ and do not necessarily require surgery, unless when there are signs of intraabdominal catastrophe or systemic toxicity. One of these ‘benign’ conditions is Crohn’s disease. The present report describes a 19-year-old Chinese boy with Crohn’s pancolitis who presented with septic shock associated with PVG and portal vein thrombosis, and was successfully managed surgically. To our knowledge, this is the fi rst report of PVG and portal vein thrombosis associated with Crohn’s disease in a Chinese patient. In addition, we have also reviewed the reports of another 18 Crohn’s patients with PVG previously described in the English literature. Specifi c predisposing factors for PVG were identified in 8 patients, including barium enema, colonoscopy, blunt abdominal trauma, and enterovenous f istula. The patients who developed PVG following barium enema and blunt trauma were all asymptomatic and no specifi c treatment was necessary. Eleven patients (58%) who presented with signs of intraabdominal catastrophe or systemic toxicity required either immediate or eventual surgery. The overall mortality rate among the 19 patients was only 11%. The present literature review has shown that the f inding of PVG associated with Crohn’ s disease does not always mandate surgical intervention. It is the clinical features and the related complications that ultimately determine the treatment approaches. The overall outcome of PVG associated with Crohn’s disease has been favourable.

Mesenteric and portal vein thrombosis associated with hyperhomocysteinemia and heterozygosity for factor V Leiden mutation

A 79-year-old man was hospitalized because of worsening upper abdominal pain which started two days before admission and was continuously present. His personal and family historywas uneventful, he did not smoke and denied toxic habits or using any medications, including overthe-counter medications, herbal remedies or any vitamin supplements.

Venous thromboembolism with inflammatory bowel disease

Venous thrombosis and thromboembolism appear to be increased in patients with inflammatory bowel disease. Although several acquired and genetic risk factors are known, about half that develop a thromboembolic event have no identifiable risk factor. Control of the inflammatory process is thought to be the key factor in risk reduction for thrombotic events. Prophylactic use of anticoagulants is not universally recommended, but possible use should be reviewed in an individual patient after evaluation of the risks, such as hemorrhage, compared to potential benefits. Particular consideration should be given if there has been a prior thrombotic event, if hospitalization will require surgery, or if an underlying coagulation disorder is present.

Isolated varices over hepatic flexure colon indicating superior mesenteric venous thrombosis caused by uncinate pancreatic head cancer - a case report

Very rare cases of varices involving right side colon were reported. Most of them were due to cirrhotic portal hypertension or other primary causes. No report case contributed to pancreatic cancer. Here, we reported a case of uncinate pancreatic cancer with the initial finding of isolated hepatic flexure colon varices. Following studies confirmed isolated varices involving hepatic flexure colon due to pancreatic cancer with occlusion of superior mesenteric vein. From this report, superior mesenteric vein occlusion caused by uncinate pancreatic head cancer should be considered as a differential diagnosis of colon varices.

Non-surgical porto-mesenteric vein thrombosis is associated with worse long-term outcomes in inflammatory bowel diseases

Objective:Our aim was to assess the risk factors for non-surgery-related portal and mesenteric vein thrombosis(PMVT)and its impact on the outcomes of inflammatory bowel diseases(IBD).Methods:All patients with a concurrent diagnosis of IBD and PMVT between January 2004 and October 2013 were identified from the electronic medical record(study group;n=20).Patients were matched for age,sex,and IBD phenotype with control IBD patients who had no PMVT,with a ratio of 1:3(control group;n=60).Risk factors for PMVT and IBD-related outcomes at one year after diagnosis of PMVT were compared between the two groups.Results:Of the 20 patients in the Study group,6(30%)had UC,14(70%)had CD and 11(55%)were male.On multivariable analysis,inpatient status(odds ratio[OR]6.88;95%confidence interval[CI]1.88-25.12)and baseline corticosteroid use(OR 4.39;95%CI 1.27-15.19)were found to be independent risk factors for the development of PMVT.At one-year follow-up,PMVT patients were more likely to have an adverse outcome of IBD,including subsequent emergency room visit(26.3%vs.1.7%;P=0.003),hospitalization for medical management(60.0%vs.20.0%;P=0.001)or IBD-related surgery(65.0%vs.26.7%;P=0.003)than the non-PMVT controls.In multivariable analysis,PMVT(OR 5.19;95%CI 1.07-25.28)and inpatient status(OR 8.92;95%CI 1.33-59.84)were found to be independent risk factors for poor outcome,whereas baseline immunomodulator use(OR 0.07;95%CI 0.01-0.51)was found to be a protective factor.Conclusions:IBD patients who were inpatients or receiving corticosteroid therapy had an increased risk of the development of PMVT.The presence of PMVT was associated with poor clinical outcomes in IBD.

Association between small intestinal bacterial overgrowth and deep vein thrombosis

Objective:Small intestinal bacterial overgrowth(SIBO)has been associated with several diseases.The association between SIBO and deep vein thrombosis(DVT)has not been investigated.This study was aimed to investigate the frequency and risk factors for the development of DVT in patients tested for SIBO.Methods:All 321 eligible patients were included from the Cleveland Clinic Gastrointestinal Motility Lab databank from January 2008 to January 2014.Patients who were evaluated with glucose hydrogen/methane breath test as well as Doppler ultrasonography for suspected DVT were included.Patients with catheter-related DVT were excluded.The primary outcomes were the frequency and risk factors(including SIBO)for DVT in this patient population.Results:Of the 321-case cohort,144 patients(44.9%)tested positive for SIBO,and 53(16.5%)had ultrasonographic findings of DVT.SIBO evaluation before the evaluation of DVT occurred in 201 patients(median time from the breath test to ultrasonography:27 months;interquartile range[IQR]:11.0–45.0 months),and SIBO evaluation after evaluation for DVT occurred in 120 patients(median time from ultrasonography to the breath test:30 months;IQR:11.8–54.3 months).In the univariate analysis,DVT was associated with family history of thromboembolic events(35.8%vs 16.0%,P=0.001),chronic kidney diseases(CKD;26.4%vs 13.4%,P=0.019)and the presence of SIBO(69.8%vs 39.9%,P50.001).In themultivariate analysis,family history of thromboembolic events(odds ratio[OR]:3.39;95%confidence interval[CI]:1.67–6.87;P50.001),CKD(OR:2.23;95%CI:1.04–4.74;P=0.037),and the presence of SIBO(OR:3.27;95% CI:1.70–6.32;P50.001)remained independently associated with DVT.Conclusion:SIBO was found to be associated with DVT.The nature of this association warrants further investigation.