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CC BY 4.0 · Journal of Clinical Interventional Radiology ISVIR
DOI: 10.1055/s-0045-1809875
Case Report

The Reflux Technique for Safe Delivery of Obsidio

Alaaeldeen Mohammed
1   Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York, United States
,
Debkumar Sarkar
1   Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York, United States
,
Francois H. Cornelis 
1   Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York, United States
2   Department of Radiology, Weill Cornell Medical College, New York, New York, United States
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Funding This work is funded in part through the NIH/NCI Cancer Center Support Grant P30 CA008748.
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Abstract

Obsidio, a polyethylene glycol-based hydrogel conformable embolic agent, is a 510(k) cleared device with shear-thinning technology, enabling precise and durable embolization. This case describes its use in an 88-year-old patient undergoing preoperative embolization for a metastatic deposit in the left acetabulum from renal cell carcinoma. While distal embolization was initially achieved with ethylene-vinyl alcohol copolymer, persistent proximal feeders required additional embolization. A reflux technique was employed, allowing controlled proximal cast formation while minimizing distal migration. Comprehensive tumor vascular occlusion was achieved, enabling surgery with minimal blood loss. This case demonstrates Obsidio's versatility and highlights the reflux technique's role in optimizing outcomes for complex embolization procedures.

Keywords

Obsidio - embolization - cancer

Disclosures/Conflict of Interest

F.H.C. is consultant for GE HealthCare.




Publikationsverlauf

Artikel online veröffentlicht:
03. Juli 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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