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

Shin Chibana, Hiroyuki Sakakibara, Sota Oguro, Takuma Usuzaki, Hiroki Kamada, Hiromitsu Tannai, Kei Takase

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In one paragraph

Article in Radiology case reports, 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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7 authors.

Shin ChibanaDepartment of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.

Hiroyuki SakakibaraDepartment of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.

Sota OguroDepartment of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.

Takuma UsuzakiDepartment of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.

Hiroki KamadaDepartment of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.

Hiromitsu TannaiDepartment of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.

Kei TakaseDepartment of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

Balloon-occluded retrograde transvenous obliterationCoil-assisted retrograde transvenous obliterationGelatin sponge in modified coil-assisted retrograde transvenous obliteration

Identifiers

PMID40475040

DOI10.1016/j.radcr.2025.04.073

PMCPMC12136886

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