ArticleCVIR endovascular2026
Onyx-only superior rectal artery embolisation for bleeding internal haemorrhoids: initial single-centre experience.
Article in CVIR endovascular, 2026. 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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5 authors.
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Abstract
purposeTo report an initial single-centre experience with Onyx-18-only superior rectal artery embolisation for bleeding internal haemorrhoids, focusing on technical feasibility, treatment laterality, and updated clinical outcomes. MATERIALS AND
methodsConsecutive Onyx-only procedures performed between October 2023 and April 2026 in patients with bleeding-predominant internal haemorrhoids were retrospectively reviewed. Patients with portal hypertension/cirrhosis were excluded because of the distinct pathophysiology of anorectal bleeding. Patient-level clinical outcomes and procedure-level technical variables were analysed separately. Updated telephone follow-up was obtained on 12 August 2026.
resultsSix patients underwent 9 procedures. Technical success was achieved in all procedures. Three patients were treated bilaterally at the initial session and 3 initially unilaterally; 2 of the latter required staged contralateral embolisation. At updated follow-up, all 6 patients reported absence of rectal bleeding after completion of treatment. Median follow-up was 19.5 months (range, 4-34), and 5 of 6 patients had at least 12 months of follow-up. One transient episode of rectal pain occurred; no major or clinically evident ischaemic complication was observed.
conclusionOnyx-only haemorrhoidal artery embolisation was technically feasible with encouraging updated bleeding control. The observed association between bilateral treatment and fewer staged procedures is hypothesis-generating and may partly reflect an operator learning curve.
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