Authors
Luis Loureiro, Paulo Almeida, Samuel Cardoso, Romaric Loffroy, Rui Machado
Published in
CVIR endovascular. Volume 9. Issue 1. Sep 07, 2026. Epub Sep 07, 2026.
Abstract
To 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.
Consecutive 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.
Six 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.
Onyx-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.
PMID:
42704567
Bibliographic data and abstract were imported from PubMed on 08 Sep 2026.
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