Identification of bleeding points after bile duct biopsy using red dichromatic imaging during peroral cholangioscopy: A case report.

ABSTRACT: Red dichromatic imaging is a new image-enhancement technology that clarifies the differences in blood concentrations and improves the visibility of the bleeding point. A 71-year-old man was presented with a common bile duct stone, which was completely removed using electrohydraulic shock wave lithotripsy with peroral cholangioscopy. During peroral cholangioscopy, a nodular lesion was found at the confluence of the cystic duct, and a forceps biopsy was performed. It was difficult to confirm the bleeding point using white-light imaging because of the pooling of blood. After switching to red dichromatic imaging mode 2 and washing the bile duct with saline solution, the bleeding point was observed in darker yellow than the surrounding blood, allowing the identification of the bleeding point. R

SUBMITTER: Kimura Y 

PROVIDER: S-EPMC9947457 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature