ArticleCVIR endovascular2022
Long-term efficacy and risk factors for stent occlusion in portal vein stent placement: a multi-institutional retrospective study.
Article in CVIR endovascular, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 11 citations in OpenAlex.
- Recanalization of Superior Mesenteric Vein-Portal Vein Junction Occlusion After Pancreatectomy Using Sharp Needle Re-entry Device.Cardiovascular and interventional radiology · 2026Article
- Portal vein stent to save the day.CVIR endovascular · 2025Article
- Emergency covered stent implantation for portal vein tear during balloon angioplasty in a patient with advanced perihilar cholangiocarcinoma.Journal of cardiothoracic surgery · 2025Article
- Usefulness of A Portal Vein Stent for Sinistral Portal Hypertension: A Case Report.Surgical case reports · 2025Article
- A Case of Superior Mesenteric Artery Occlusion Caused by Portal Vein Stenting.Interventional radiology (Higashimatsuyama-shi (Japan) · 2025Article
- Current approaches to the management of jejunal variceal bleeding at the site of hepaticojejunostomy after pancreaticoduodenectomy.World journal of gastroenterology · 2024Article
- Necrotizing Pancreatitis and Endovascular Stenting of the Portal and Superior Mesenteric Vein: A Case Report.Case reports in gastroenterologyArticle
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Authors and funding
8 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSurgical treatment for PV (portal vein) stenosis/occlusion can pose a fatal risk of massive bleeding from severe adhesions and collateral vessel formation. PV stents placement is a minimally invasive and effective procedure for PV stenosis/occlusion, but PV stents sometimes occlude. The relationship between post-stent PV hemodynamics and stent occlusion has not been thoroughly investigated. Certain precautions during PV stent placement may reduce the risk of stent occlusion. This study aimed to evaluate long-term outcomes of PV stent patency and investigate factors including PV hemodynamics associated with stent occlusion. MATERIALS AND
methodsThirty-four consecutive patients with PV stenosis/occlusion who underwent PV stent placement in four institutions between December 2006 and February 2021 were retrospectively examined. The primary study endpoints were technical success, clinical success, and cumulative stent patency rate. The secondary endpoints were risk factors of stent occlusion. A univariable Cox proportional hazards model with sixteen variables was used to determine predictors of stent occlusion. Factors with p-value ≤ 0.1 in univariable analysis were included in the multivariable analysis. Alpha was set at 0.05.
resultsTechnical and clinical success rates were 88.2% and 79.4%, respectively. Six patients (17.7%) experienced stent occlusion. The cumulative stent patency rate at six months, one year, and three years was 79.1%, 79.1%, and 65.9%, respectively. In the univariate analysis, the variables with p-value ≤ 0.1 were lesion length > 4 cm, hepatofugal collateral vein visualization after stent placement, and residual stenosis > 30% after stent placement. In the multivariate analysis, residual stenosis > 30% after stent placement was significantly associated with stent occlusion (hazard ratio, 10.80; 95% confidence interval, 1.08-108.44; p = 0.04).
conclusionPV stent placement was technically feasible and effective in improving portal hypertension. However, stent occlusion was not uncommon. Residual stenosis > 30% after stent placement was significantly associated with stent occlusion. We should pay attention to correctly assess the range of stenosis and release the stenosis as much as possible.
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