RT Journal Article SR Electronic T1 Pilot Study of Probe-based Confocal Laser Endomicroscopy with Fluorescein-dripping Method for Liver Tumors JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 4775 OP 4781 DO 10.21873/anticanres.12786 VO 38 IS 8 A1 MORIMOTO, MASAKI A1 HONJO, SOICHIRO A1 SAKAMOTO, TERUHISA A1 UCHINAKA, EI A1 AMISAKI, MASATAKA A1 ARAI, YOSUKE A1 YAMAMOTO, MANABU A1 FUKUMOTO, YOJI A1 OSAKI, TOMOHIRO A1 TOKUYASU, NARUO A1 ASHIDA, KEIGO A1 SAITO, HIROAKI A1 FUJIWARA, YOSHIYUKI YR 2018 UL http://ar.iiarjournals.org/content/38/8/4775.abstract AB Background/Aim: Probe-based confocal laser endomicroscopy (pCLE) is a novel diagnostic technique that can provide real-time imaging of tissues at the cellular level. In this study, pCLE was applied to liver tumors and its diagnostic value was evaluated. Patients and Methods: Ten patients who underwent hepatectomy for liver tumors were evaluated with pCLE from February to May 2017. Immediately after liver resection, pCLE evaluation was performed in the operating room as an ex vivo study. The newly-adopted “fluorescein-dripping method” was used for the observation. Results: First, the optimal fluorescein exposure time for the surface of liver was defined in the fluorescein-dripping method. Next, the distinctive findings in the cancerous region were investigated. The characteristic appearance of irregular arrangements of concentrated cells under fluorescein dripping was observed in six of seven hepatocellular carcinoma (HCC) tumors. Conclusion: In all HCC specimens, discrimination of the cancerous region from normal liver was possible with pCLE.