RT Journal Article SR Electronic T1 Laparoscopic Anatomical Liver Resection Using Liver Mapping of Incidental Indocyanine Green Fluorescence due to Cholestasis JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 5583 OP 5588 DO 10.21873/anticanres.16760 VO 43 IS 12 A1 TOMIOKA, KODAI A1 AOKI, TAKESHI A1 TASHIRO, YOSHIHIKO A1 KUSANO, TOMOKAZU A1 MATSUDA, KAZUHIRO A1 YAMADA, KOSUKE A1 NOGAKI, KOJI A1 WADA, YUSUKE A1 SHIBATA, HIDEKI A1 HIRAI, TAKAHITO A1 YAMAZAKI, TATSUYA A1 SAITO, KAZUHIKO A1 UCHIDA, MARIE A1 NAGAISHI, SHODAI A1 FUJIMORI, AKIRA A1 ENAMI, YUTA YR 2023 UL http://ar.iiarjournals.org/content/43/12/5583.abstract AB Background/Aim: Indocyanine green (ICG) fluorescence is useful in laparoscopic hepatectomy (LH) for tumor identification and staining, as well as determination of resection margins. At our Institution, patient-specific, three-dimensional simulations and rehearsal of surgical strategies are carried out preoperatively. We describe cases in which ICG administered preoperatively became stagnated and fluoresced in an area similar to the preoperatively established resection area and the pathological findings in these cases. Patients and Methods: Four patients who underwent LH at our hospital between 2020 and 2023 (due to hepatocellular carcinoma in two and colorectal liver metastasis in two) were enrolled in the present study. The ICG-fluorescing liver segments were resected laparoscopically and their pathological characteristics were examined using a fluorescence microscope. Results: In four cases, the areas of ICG fluorescence seen intraoperatively were due to stasis of preoperatively administered ICG, which fortuitously was equivalent to the planned resection area in the preoperative patient-specific simulation. The fluorescent areas were resected; there were no cases of bile leakage or recurrence. Fluorescence microscopy revealed areas with diffuse ICG fluorescence in normal hepatocytes on the tumor’s peripheral side. Conclusion: It was suggested that resection of the liver area that was fluorescent due to stagnation of preoperatively administered ICG was rational and justified both anatomically and oncologically. This resection may also contribute to the prevention of bile leakage and recurrence.