A modified radiofrequency-assisted approach to right hemihepatectomy.

ABSTRACT

AIMS: To evaluate a modified radiofrequency-assisted approach to right hemihepatectomy. METHODS: Following a bilateral subcostal incision and intraoperative ultrasonography, the liver was mobilized in the standard manner, and a cholecystectomy was performed. The portal vein was isolated, encircled, and ligated. After demarcating the liver parenchyma, coagulation necrosis was achieved using a radiofrequency-assisted device along the line demarcated for transecting the liver parenchyma. The actual transection of the liver parenchyma and the right portal vein was done using a surgical scalpel along the radiofrequency-coagulated line. The right hepatic vein was coagulated using the radiofrequency sealer or by stitching in the resection plane. The hepatic artery was not dissected and was sealed together with the bile ducts in the resection plane using the radiofrequency instrument. The hepatic vein was not divided. RESULTS: Between July 2005 and July 2006, a total of 49 liver resections were performed in our unit. Of these, the radiofrequency-assisted technique was used in 33 cases with metastatic disease; 14 of these cases had right hemihepatectomies, including 2 repeat resections. The mean operation time was 180min (range, 120-240min), and the average blood transfusion was 0.14U (range, 0-2U). Postoperatively, there was no morbidity, such as bleeding, infection, or biliary fistula, related to the liver resection technique, and no patients died as a result of surgery. In 8 out of the 14 right hemihepatectomies, a right-sided pleural effusion was observed; 3 of them required evacuation. CONCLUSION: This paper describes a modified radiofrequency-assisted hemihepatectomy, which allows one to obtain control of the portal blood flow going into the resected part of liver. The modified approach appears to be simple and safe.