Work

Unexpected para-aortic venous migration of n-butyl cyanoacrylate during transarterial sac embolization for a type II endoleak: A technical pitfall

Year: 2026

Type: article

Abstract: We report an unusual case of para-aortic venous migration of n-butyl cyanoacrylate (NBCA) during transarterial sac embolization for a type II endoleak after endovascular aneurysm repair. Preprocedural computed tomography and angiography demonstrated no venous communication. During progressive NBCA injection, sequential opacification of the fourth lumbar vein and a para-aortic venous structure became apparent, prompting immediate cessation of embolization. The patient remained asymptomatic, and follow-up imaging demonstrated stable aneurysm size without complications. This case highlights a rare technical pitfall and emphasizes careful fluoroscopic monitoring during NBCA sac embolization despite initially negative imaging findings.

Source: Journal of Vascular Surgery Cases and Innovative Techniques

DOI: 10.1016/j.jvscit.2026.102514

Authors: Kohei Hamamoto, Emiko Chiba, Soichiro Kojima, Mamoru Arakawa, Harushi Mori

Institution: Jichi Medical University

Language: English

Topic: Aortic aneurysm repair treatments

Subfield: Surgery

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $1,250