Case series: Occlusion using gelatin sponge in modified coil-assisted retrograde transvenous obliteration (Og-CARTO) for the treatment of portal hypertensive varices

We present occlusion using gelatin sponge in modified coil-assisted retrograde transvenous obliteration (Og-CARTO), a novel technique based on CARTO that incorporates gelatin sponge for variceal obliteration. This technique uses 2 microcatheters: 1 for sparse coil embolization in the efferent vein a...

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Bibliographic Details
Main Authors: Shin Chibana, Hiroyuki Sakakibara, Sota Oguro, Takuma Usuzaki, Hiroki Kamada, Hiromitsu Tannai, Kei Takase
Format: Article
Language:English
Published: Elsevier 2025-08-01
Series:Radiology Case Reports
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Online Access:http://www.sciencedirect.com/science/article/pii/S1930043325003711
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Summary:We present occlusion using gelatin sponge in modified coil-assisted retrograde transvenous obliteration (Og-CARTO), a novel technique based on CARTO that incorporates gelatin sponge for variceal obliteration. This technique uses 2 microcatheters: 1 for sparse coil embolization in the efferent vein and the other to inject large gelatin sponge particles (5-mm squares) into the varices, facilitating controlled blood flow stagnation prior to sclerosant administration. By eliminating prolonged balloon occlusion, Og-CARTO simplifies the procedure and reduces procedural burden. We successfully applied this technique in three cases with varying variceal anatomies, achieving complete thrombosis without significant complications. Og-CARTO provides a practical, cost-effective alternative when balloon occlusion is challenging and shows potential for broader clinical application.
ISSN:1930-0433