Successful Treatment for a Huge Pulmonary Pseudoaneurysm in the Interlobar Segment with Coil Embolization: A Case Report

Annals of Vascular Diseases 2026 Open access

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Authors: Masao Takahashi, Koichiro Matsuura, Ken Nakazawa, Yoko Usami, Shunsuke Yamada, Satoru Mochida, Konjo Cho, Kaiji Inoue, Eito Kozawa
DOI: 10.3400/avd.cr.25-00132
Cited by: 0

Abstract

A 62-year-old male with empyema underwent an attempted pleural drainage, which resulted in iatrogenic pseudoaneurysm formation of the right pulmonary artery in the interlobar segment. Endovascular treatment was favored over surgical intervention due to the presence of empyema. The pulmonary artery in the interlobar segment was embolized with metallic coils, with inevitable occlusion of blood perfusion in the middle and lower lobes. Despite the perfusion loss in a large lung territory, the patient eventually required no supplemental oxygenation. Coil embolization can be a favorable alternative to stent-grafting for pseudoaneurysm even in the interlobar segment, despite the potential risk of post-procedure hypoxemia.

Fields of Study & Subjects

Vascular Procedures and Complications Vascular Anomalies and Treatments Pleural and Pulmonary Diseases

Publication details

Journal / source
Annals of Vascular Diseases
Volume
19
Issue
1
Pages
n/a–n/a
Publication date
1 January 2026
Language
EN