Prognostic role of liver resection in extended cholecystectomy for T2 gallbladder cancer revisited: A propensity score-matched analysis

Comment on: Prognostic Effect of Liver Resection in Extended Cholecystectomy for T2 Gallbladder Cancer Revisited: A Retrospective Cohort Study with Propensity-Score-Matched Analysis

“…Third, in Table 1 of this study by Park et al 1 (Supplemental Table 1 http://links.lww.com/AOSO/A264 ), more surprisingly, the P value for the operative method (open vs. laparoscopic/robotic) remained less than 0.001 after matching. This suggests that this PSM-related variable was not well balanced, contrary to the expectations in a successful PSM where covariates should be balanced across the treatment and control groups.…”

“…We read with great interest the article by Park et al 1 recently published in your esteemed journal. The authors have conducted a significant investigation into the impact of lymph node dissection with liver resection (LND+L) and lymph node dissection only (LND) on survival outcomes in T2 gallbladder cancer patients.…”

Response to: “Comment on: Prognostic Effect of Liver Resection in Extended Cholecystectomy for T2 Gallbladder Cancer Revisited: A Retrospective Cohort Study with Propensity-Score-Matched Analysis”

“…We appreciate the interest of Dr. Zhang and colleagues in our multicenter study evaluating the prognostic effect of liver resection during extended cholecystectomy for T2 gallbladder cancer. 1 …”