# Percutaneous Transretropubic Needle Prostatic Biopsy Under US and CT Guidance

## TL;DR

This paper reports the first case of a prostate biopsy performed through the retropubic area using ultrasound and CT guidance in a patient with a blocked anus.

## Contribution

The paper introduces a novel biopsy method for patients with rectal obstructions.

## Key findings

- A transabdominal ultrasound-guided transretropubic prostate biopsy was successfully performed.
- Computed tomography was used to monitor the needle tip position during the biopsy.
- The biopsy confirmed the presence of prostatic adenocarcinoma.

## Abstract

No previous instances of percutaneous transretropubic prostate biopsy have been documented.

A 74‐year‐old male patient with a permanent stoma, who had undergone colectomy for descending colon cancer two decades earlier, reported experiencing dysuria. A screening examination revealed an elevated prostate‐specific antigen level of 120.24 ng/mL. Despite an intact rectum, the patient's anus was severely constricted or blocked, preventing both digital rectal examination and the insertion of a transrectal ultrasound probe. A transabdominal ultrasound‐guided transretropubic prostate biopsy was conducted while monitoring the needle tip position using computed tomography. The subsequent pathological analysis confirmed prostatic adenocarcinoma.

This case represents the first reported instance of a percutaneous transretropubic prostate biopsy.