Application of Hepatic Segmental Staining in Anatomic S8 Segmentectomy Under Intra-Operative Ultrasonography

Objective The purpose of this study was to investigate the clinical value of hepatic segmental staining under intra-operative ultrasonography guidance in anatomic segment 8 (S8) segmentectomy. Method This was a retrospective study of 31 patients with hepatocellular carcinoma (HCC) whose lesions were located in S8. Under intra-operative ultrasonography guidance, the hepatic portal vein branch of S8 was dyed and then the resection line was marked with an electric knife on the stained area of the liver surface, in preparation for the anatomic S8 segmentectomy. The liver section exposed the right hepatic vein, the middle hepatic vein trunk side wall and the hepatic pedicle of S8. Results The average operation time of 31 cases of anatomic S8 segmentectomy was (230±76) min, the average surgical blood loss was (305±235) ml, the incidence of post-operative complications was 26% (8/31), average post-operative hospitalization time was (13±3) d, with a 1-year recurrence rate of 19% (6/31) and a 1-year survival rate of 94% (29/31). Conclusion Under the guidance of intra-operative ultrasonography, hepatic segmental staining can improve the precision of an anatomic S8 segmentectomy, maximally reducing the post-operative complications and improving the safety of liver resection.