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

## TL;DR

A 62-year-old man with a lung infection developed a dangerous blood vessel bulge, which was successfully treated with coil embolization instead of surgery.

## Contribution

Demonstrates coil embolization as a viable treatment for interlobar pulmonary pseudoaneurysms despite risks.

## Key findings

- Coil embolization successfully treated a pseudoaneurysm in the interlobar pulmonary artery.
- The patient did not require supplemental oxygen despite significant lung perfusion loss.
- Endovascular treatment was preferred over surgery due to existing lung infection.

## 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.