@article{oai:nagasaki-u.repo.nii.ac.jp:00005326, author = {Tanaka, Takayuki and Takatsuki, Mitsuhisa and Hidaka, Masaaki and Hara, Takanobu and Muraoka, Izumi and Soyama, Akihiko and Adachi, Tomohiko and Kuroki, Tamotsu and Eguchi, Susumu}, issue = {3}, journal = {Journal of Hepato-Biliary-Pancreatic Sciences}, month = {Mar}, note = {Background Although several reports have shown the efficacy of a fluorescence navigation system (FNS) with indocyanine green (ICG) to detect liver malignancies during hepatectomy, the real accuracy of this procedure is not yet clear. This study aimed to analyze the actual efficacy of ICG-FNS in cirrhotic and non-cirrhotic livers. Methods Ten cirrhotic whole livers explanted from liver transplant recipients and 23 non-cirrhotic livers from patients who underwent hepatectomy for various kinds of liver tumors were investigated with ICG-FNS. All surgical specimens were analyzed macroscopically and pathologically. Results In the patients with a cirrhotic liver, most nodules illuminated by ICG-FNS were diagnosed as regenerative nodules pathologically. The positive predictive value was 5.4%. There was a significant difference in positive predictive value to detect malignant liver tumors between cirrhotic liver and non-cirrhotic liver (5.4% vs 100%, P < 0.0001). In the non-cirrhotic livers, 11 of 33 (32.4%) tumors were not recognized by ICG-FNS through the liver surface before resection. There was a significant difference in the depth from the liver surface to tumor between illuminated nodules and non-illuminated nodules (1.5 mm vs 11.6 mm, P < 0.01). Conclusions It is necessary to know the limitation of ICGFNS when detecting liver malignancies in both cirrhotic and non-cirrhotic livers., Journal of Hepato-Biliary-Pancreatic Sciences, 21(3), pp.199-204; 2014}, pages = {199--204}, title = {Is a fluorescence navigation system with indocyanine green effective enough to detect liver malignancies?}, volume = {21}, year = {2014} }