Fig. 5

Intraoperative findings. a Laparoscopic image: there is adherence of the duodenum to the gallbladder bed. b NIFC image: NIFC shows a well-defined fluorescent border on the duodenum-like structure (arrowhead). c Location of the duodenal bulb perforation (arrowhead). A suction tube is inserted into the duodenum. d White light image: a part of the remnant gallbladder (¶). The white star indicates the duodenum. e Remnant gallbladder (¶) shows fluorescence. The white star indicates the duodenum. f White light image: the remnant gallbladder (¶) appears after adhesion dissection. g Remnant gallbladder (¶) shows high-intensity fluorescence after adhesion dissection. h The cystic duct (*) and common bile duct (†) are clearly recognizable by fluorescence. ¶, remnant gallbladder