# Benign mass-like lesion at the cholecystectomy bed: A case report of unusual postcholecystectomy imaging findings

## TL;DR

A case report describes an unusual mass-like lesion at the site of a previous gallbladder removal, highlighting the importance of recognizing such imaging findings to prevent misdiagnosis.

## Contribution

The paper presents a rare imaging case of a postcholecystectomy lesion with unique characteristics not previously well-documented.

## Key findings

- The lesion showed hypoechoic ultrasound, hypodense CT, and non-enhancing MRI features.
- Histopathology revealed foreign body fragments and fibrin, not a typical complication.
- The case emphasizes the need for radiologists to recognize such findings to avoid misdiagnosis.

## Abstract

Cholecystectomy is associated with a variety of complications. Imaging plays a pivotal role in diagnosing these complications, but some imaging findings are poorly understood and unexplored. Here, we present a 59-year-old woman with a mass-like solid-cystic lesion at the cholecystectomy bed after 12 years of surgery. The lesion was hypoechoic in ultrasound, hypodense in CT scan, and had low T2 and intermediate T1 signal intensity and no enhancement in MRI, which was not consistent with the imaging characteristics of known complications. Histopathological evaluation revealed foreign body fragments and fibrin materials within the lesion. We conclude that radiologists should be familiar with these findings to avoid unnecessary interventions and misdiagnosis.