# Removal of a Retained Percutaneous Nephrostomy Balloon Catheter Using a Trocar Needle: A Case Report

## TL;DR

A 76-year-old man had a non-deflating nephrostomy balloon catheter successfully removed using a trocar needle, offering a new technique for similar cases.

## Contribution

A novel method using a trocar needle to remove non-deflating nephrostomy balloon catheters is proposed.

## Key findings

- A 19-gauge trocar needle successfully punctured and deflated the non-deflating balloon.
- The catheter was safely exchanged after balloon deflation using this method.
- This technique may be suitable for treating non-deflating nephrostomy catheters.

## Abstract

While non-deflating Foley catheters are a well-known complication, non-deflating nephrostomy balloon catheters have rarely been reported. We report the case of a 76-year-old man with a non-deflating nephrostomy balloon catheter. To treat this condition, a 19-gauge trocar needle included in an 8.5-F drainage catheter was inserted through the urinary lumen of the catheter to puncture the balloon. The balloon was then deflated, and the nephrostomy catheter was exchanged. Balloon puncture using a trocar needle may be a suitable technique for removing non-deflating nephrostomy balloon catheters.