Efficacy of three dimensional visualization technique assisted hepatectomy for the treatment of primary liver cancer / 中华外科杂志

<p><b>OBJECTIVE</b>To study the clinical efficacy of three dimensional visualization technique assisted hepatectomy for the treatment of primary liver cancer.</p><p><b>METHODS</b>A total of 108 primary liver cancer patients who had been admitted to Zhujiang Hospital of Southern Medical University from September 2013 to December 2014 were assigned to three dimensional visualization technique assisted hepatectomy group (n = 55) and routine hepatectomy group (n = 53) according to different methods of hepatectomy. The observed variable in two groups as fellow: the operative time, intraoperative blood loss, intraoperative blood transfusion, the change of postoperative liver function and biochemical indicators in 1, 3, 5 days, postoperative complication. The patients were followed up via-return visit or telephone.A student's t test was used to compare continuous parametric variables, and the Mann-Whitney U test was used to compare non-parametric or discrete variables, as appropriate. Categorical data were compared using the Chi-square test or Fisher's exact test.</p><p><b>RESULTS</b>In 3D group and routine hepatectomy group, the patients' intraoperative blood transfusion volume were 300 ml (200-600 ml) and 400 ml (300-700 ml) (χ² = -2.609, P = 0.009) respectively, intraoperative blood loss volume were 400 ml (250-600 ml) and 550 ml (400-800 ml) (χ² = -2.277, P = 0.023), the operative time were (247 ± 57) min and (262 ± 53) min (χ² = -1.787, P = 0.074), the deterioration of the mainly liver function indicators peak in routine hepatectomy group were higher than that in 3D group (P < 0.05). The ALT, AST, TBIL in 3D group were lower than that in routine group on postoperative day 1, 3, 5, respectively (χ² = -5.740- -0.692, all P < 0.05). The ALB in 3D group was higher than that in routine group on postoperative day 3, 5 ((33.0 ± 5.6) g/L vs. (31.2 ± 4.1) g/L, (36.7 ± 4.4) g/L vs. (34.7 ± 4.2) g/L) (t = 1.922-2.573, both P < 0.05). In 3D group and routine hepatectomy group, the incidence of postoperative complications were 10.9% and 30.1% (χ² = 6.185, P = 0.013), the length of postoperative hospital day were (12.6 ± 3.6) days and (14.4 ± 3.5) days (χ² = -3.384, P = 0.031), the positive rate of resection margin were 0 and 9.4% respectively (Fisher test: P = 0.026), the 1-year tumor recurrence rate were 22.2% and 37.5% (P > 0.05), 1-year survival rate was 82.2% and 77.5% (P > 0.05). No perioperative mortality was occured in the two groups.</p><p><b>CONCLUSION</b>Three dimensional visualization technique assisted hepatectomy for the treatment of primary liver cancer could reduce surgical injury, lower the rate of postoperative complications, improve the safety and the efficacy of the operation and achieve a good prognosis.</p>

Application of hepatic segment resection combined with rigid choledochoscope in the treatment of complex hepatolithiasis guided by three-dimensional visualization technology / 中华外科杂志

<p><b>OBJECTIVE</b>To study the value of hepatic segment resection combined with rigid choledochoscope by the three-dimensional (3D) visualization technology in the diagnosis and treatment of complex hepatolithiasis.</p><p><b>METHODS</b>Enhance computed tomography (CT) data of 46 patients with complex hepatolithiasis who were admitted to the Zhujiang Hospital of the Southern Medical University from July 2010 to June 2014 were collected.All of the CT data were imported into the medical image three-dimensional visualization system (MI-3DVS) for 3D reconstruction and individual 3D types. The optimal scope of liver resection and the remnant liver volume were determined according to the individualized liver segments which were made via the distribution and variation of hepatic vein and portal vein, the distribution of bile duct stones and stricture of the bile duct, which provided guidance for intraoperative hepatic lobectomy and rigid choledochoscope for the remnant calculus lithotripsy.</p><p><b>RESULTS</b>Outcomes of individual 3D types: 10 cases of type I, 11 cases of IIa, 23 cases of IIb, 2 cases of IIc, 19 cases coexisted with history of biliary surgery. The variation of hepatic artery was appeared 6 cases. The variation of portal vein was appeared 8 cases. The remaining liver volume for virtual hepatic lobectomy controlled more than 50%. Eighteen cases underwent left lateral hepatectomy, 8 cases underwent left liver resection, 8 cases underwent right posterior lobe of liver resection, 4 cases underwent the right hepatic resection, 4 cases underwent IV segment liver resection, 2 cases underwent right anterior lobe of liver resection, 2 cases underwent left lateral hepatectomy combined with right posterior lobe of liver resection, 26 cases underwent targeting treatment of rapid choledochoscope and preumatic lithotripsy. The actual surgical procedure was consistent with the preoperative surgical planning. There was no postoperative residual liver ischemia,congestion, liver failure occurred in this study. The intraoperative calculus clearance rate was 91.3% (42/46) because 4 cases of postoperatively residual calculi were not suitable for one stage management due to suppurative cholangitis but removed calculus successfully with rigid choledochoscope through T tube fistula.</p><p><b>CONCLUSION</b>Hepatic segment resection combined with rigid choledochoscope under the guidance of three-dimensional visualization technology achieves accurate preoperative diagnosis and higher complete stone clearance rate of complicated hepatolithiasis.</p>