[Laparoscopic Extirpation of Peritoneal Dissemination of Hepatocellular Carcinoma Using ICG Imaging].

A 71-year-old man who underwent laparoscopic partial liver resection for local recurrence hepatocellular carcinoma (HCC)in segment 4 one year after percutaneous radiofrequency ablation(RFA)for HCC. About 3 years after treatment, the patient showed elevation of serum level of tumor marker and a mass lesion in the round ligament on CT and EOB-MRI. We made a diagnosis of peritoneal dissemination of HCC. Laparoscopic extirpation of peritoneal dissemination using indocyanine green(ICG)imaging was performed and no other tumors were observed in the peritoneal cavity. A lesion was diagnosed as peritoneal dissemination of HCC, and postoperative course was uneventful. This patient underwent repeated RFA and partial resection for recurrence of HCC. The patient was died for intrahepatic multiple recurrence of HCC without peritoneal dissemination 25 months after extirpation of peritoneal dissemination. In the field of hepatobiliary surgery, ICG imaging can be used for the intraoperative real-time visualization of hepatic malignancies. The ICG imaging is restricted to detection of fluorescence for liver tumors 5-10 mm from the liver surface. In the detection of peritoneal dissemination, however, there are no such limitations. Laparoscopic extirpation using ICG imaging is useful for the detection of peritoneal dissemination of HCC and may improve the prognosis in selected patients.