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

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.