ArticleCurrent oncology (Toronto, Ont.)2025
A Retrospective Analysis of Endovascular Stent Insertion for Malignant Superior Vena Cava Obstruction, Focusing on Anticoagulation Practices.
Article in Current oncology (Toronto, Ont.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BACKGROUND/
objectivesA knowledge gap persists regarding anticoagulation therapy after endovascular stent insertion for malignant superior vena cava obstruction (mSVCO). Guidelines are supported by retrospective studies with a radiological focus and lack specific drug recommendations. No studies to date have captured the multi-disciplinary nature of decision-making over time.
methodsThis single-center retrospective service evaluation includes patients with solid organ malignancy who received a stent for mSVCO between July 2016 and May 2022. Patient and treatment characteristics, clinical outcomes and prescribing decisions were collected from medical records and analyzed.
resultsOf 49 patients (55% female, mean age 59), 73% had metastatic extra-thoracic disease at stent insertion. Technical success was achieved in 98% of cases and 92% survived to discharge. Forty-eight patients were followed until death. Median survival was 2.4 months. Post-procedure imaging (performed in 55% of patients) revealed 10 (21%) cases of systemic venous thromboembolism and 7 cases of stent thrombosis. Forty-four (91%) patients received anticoagulation therapy (62% therapeutic dose low molecular weight heparin). Those with thrombotic complications were fitter pre-procedurally than the rest of the cohort. There was one case of major bleeding. Twenty-two instances of therapy modification occurred following the initial plan, including nine changes due to a patient preference for oral therapy.
conclusionPatients undergoing stenting for mSVCO demonstrate high thrombotic risk and a poor prognosis. Anticoagulation plans are frequently modified post discharge due to changing risk profiles and patient preferences. Multi-disciplinary collaboration is essential to support patient-centered and individualized management. Future research should investigate direct oral anticoagulants and anti-platelet therapy and develop risk assessment tools for this population.
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