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Combined portal, splenic and mesenteric venous thrombosis in inactive ulcerative colitis with heterozygous mutation in MTHFR gene: A rare case of thrombophilia.

ABSTRACT: Thrombophilia is a rare but potentially catastrophic phenomenon occurring in patients having tendency of thrombosis. It may lead to serious complications. The etiology of thrombophilia is thought to be multifactorial and related to both acquired and inherited factors. Inflammatory bowel disease is an acquired cause of thrombophilia. Thromboembolic events are seen during inflammatory bowel disease, especially during the active period of the disease. In inflammatory bowel disease, thrombus formation in portal, splenic and mesenteric veins are not common. Besides, the association of genetic disorders related to metabolism of homocysteine with inflammatory bowel disease has been evidenced, especially in Crohn disease and rarely in ulcerative colitis. We present a rare case of ulcerative colitis in association with combined portal, splenic and mesenteric vein thrombosis. The patient was recently diagnosed with the disease which was in the inactive period. Interestingly, our patient was also heterozygous for the mutation in methylenetetrahydrofolate reductase (MTHFR) gene.

SUBMITTER: Gursoy G

PROVIDER: S-EPMC3430070 | biostudies-other | 2011 Nov

REPOSITORIES: biostudies-other

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Combined portal, splenic and mesenteric venous thrombosis in inactive ulcerative colitis with heterozygous mutation in MTHFR gene: A rare case of thrombophilia.

Gürsoy Gül G Cimbek Ahmet A Acar Yaşar Y Erol Birsen B Dal Hayriye Cankar HC Evrin Nuray N Gungor Aslı A

Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences 20111101 11

Thrombophilia is a rare but potentially catastrophic phenomenon occurring in patients having tendency of thrombosis. It may lead to serious complications. The etiology of thrombophilia is thought to be multifactorial and related to both acquired and inherited factors. Inflammatory bowel disease is an acquired cause of thrombophilia. Thromboembolic events are seen during inflammatory bowel disease, especially during the active period of the disease. In inflammatory bowel disease, thrombus formati ...[more]

PMID: 22973354

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Project description:ObjectiveSplenectomy is one crucial solution for hypersplenism with portal hypertension. However, portal vein system thrombosis (PVST) caused by hemodynamic changes affects the prognosis of patients. We analyze the changes in portal vein hemodynamics following splenectomy for Wilson's disease combined with portal hypertension and the influencing factors that lead to PVST.MethodsA retrospective cohort study was conducted, in which 237 Wilson's disease patients with hypersplenism underwent splenectomy. The hemodynamic indices of the portal vein were monitored before surgery and on the 1st, 7th, and 14th days around surgery. The patients were divided into PVST and non-PVST groups. The clinical factors were identified by univariate and multivariate logistic regression. The Logit P was calculated according to the logistic regression prediction model, and the ROC curve for each independent factor was plotted.ResultsThe portal vein velocity, flow, and inner diameter showed a downward trend around surgery, with statistically significant differences between each time point (P < 0.01). The PVST incidence rate was 55.7%. Univariate analysis revealed that the platelet (PLT) levels on the postoperative 3rd and 7th days (P = 0.001; P < 0.001), D-dimer (D-D) on the postoperative 7th and 14th days (P = 0.002; P < 0.001), preoperative portal vein velocity, flow, diameter (P < 0.001), and splenic vein diameter (P < 0.001) were all statistically and significantly different between the two groups. Multivariate logistic regression revealed a significant increase in PLT on the postoperative 7th day (OR = 1.043, 95% CI, 1.027-1.060, P < 0.001) and D-D on the postoperative 14th day (OR = 1.846, 95% CI, 1.400-2.435, P < 0.001). Preoperative portal and splenic vein diameters (OR = 1.565, 95% CI, 1.213-2.019, P = 0.001; OR = 1.671, 95% CI, 1.305-2.140, P < 0.001) were the risk factors for PVST. However, preoperative portal vein velocity and flow (OR = 0.578, 95% CI, 0.409-0.818, P = 0.002; OR = 0.987, 95% CI, 0.975-0.990, P = 0.046) were protective factors for PVST. Logit P was calculated using a logistic regression prediction model with a cut-off value of -0.32 and an area under receiver operating characteristic curve of 0.952 with 88.61% accuracy.ConclusionsSplenectomy relieves portal hypertension by reducing the hemodynamics index. PVST is linked to multiple factors, including preoperative portal vein diameter, velocity, flow, and splenic vein diameter, especially PLT on the postoperative 7th day and D-D on the postoperative 14th day. The predictive model is accurate in predicting PVST.

Dataset Information

Combined portal, splenic and mesenteric venous thrombosis in inactive ulcerative colitis with heterozygous mutation in MTHFR gene: A rare case of thrombophilia.

Publications

Combined portal, splenic and mesenteric venous thrombosis in inactive ulcerative colitis with heterozygous mutation in MTHFR gene: A rare case of thrombophilia.

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