# Urinary tract fungal ball in a single kidney after total nephroureterocystectomy

## TL;DR

A rare case of a urinary tract fungal ball in a single kidney after surgery is reported, highlighting the importance of proper drainage methods.

## Contribution

This paper presents a novel clinical case of a fungal ball in a single kidney post-surgery, emphasizing treatment considerations.

## Key findings

- A 50-mm fungal ball was found in the renal pelvis of an 80-year-old male with a history of pyelonephritis.
- Candida albicans was identified as the causative agent through tissue culture.
- Percutaneous removal was used to treat the obstruction caused by the fungal ball.

## Abstract

Fungal balls in the urinary tract are rare but dangerous complications of candiduria. Here, we report a case of a urinary tract fungal ball in a single kidney after total nephroureterocystectomy.

The patient was an 80‐year‐old male. He had a history of pyelonephritis, and his ureteral stent was regularly replaced. He was admitted to the hospital with a chief complaint of urinary tract obstruction, and a 50‐mm‐sized mass was found within the renal pelvis. Because the ureteral stent frequently became obstructed, the mass was removed percutaneously. Candida albicans was detected on the tissue culture results, and the mass was diagnosed as a fungal ball.

Appropriate urinary drainage methods for fungal balls vary among patients, and it is important to select an appropriate method based on the accumulated number of cases.