LAUSR

Indocyanine green (ICG) is a water-soluble dye with a broad range of clinical uses, including assessing hepatic function and perfusion, cardiac output, and ophthalmic angiography. In gastrointestinal surgery, conventional laparoscopic and open imaging systems can use a near-infrared detection mode, which allows intraoperative illumination of ICG fluorescence on a black background. This ease of implementation has prompted wider adoption of ICG fluorescence in gastrointestinal surgery, most commonly to assess perfusion of gastrointestinal anastomoses, which may reduce the incidence of anastomotic leak. The safety and efficacy of ICG fluorescence has led to additional uses intraoperatively, including ureter identification, visualization of the biliary tract during cholecystectomy, detecting ischaemic leak in bariatric surgery, visualization of tumours that are challenging to identify laparoscopically, and endoscopic tattooing of lesions. Here, we present a case in which a novel application of intraoperative ICG fluorescence