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BackgroundRobotic spleen-preserving distal pancreatectomy (RSPDP) is an ideal procedure for benign and low-grade malignant tumors in the distal pancreas, and two splenic preservation techniques (the Kimura and Warshaw techniques) can be used for RSPDP. This study aimed to evaluate the feasibility and safety of the "Kimura-first" strategy for RSPDP and to investigate the risk factors affecting the preservation of the spleen and splenic vessels.MethodsThe electronic medical records of patients who underwent robotic distal pancreatectomy (RDP) between October 2016 and December 2019 at our institution were retrospectively reviewed. Univariate and multivariate analyses were conducted to identify the risk factors influencing preservation of the spleen and splenic vessels during RDP.ResultsSixty-one patients scheduled for RSPDP who received RDP were included in this study [Kimura technique, 41 patients; Warshaw technique, 11 patients; and robotic distal pancreatectomy with splenectomy (RDPS), 9 patients]. The overall splenic preservation rate with RDP was 85.2% (52/61). The preservation rate of splenic vessels with the Kimura technique with RSPDP was 78.8% (41/52). The RSPDP group had remarkably less estimated blood loss (EBL; median 50 vs. 300 mL, P=0.000) and a lower morbidity rate (13.5% vs. 44.4%, P=0.047) than the RDPS group. The logistic regression models showed that obvious splenic vessel compression by the tumor was an independent risk factor for splenic vessel preservation with RSPDP (OR 0.021, 95% CI: 0.002-0.271, P=0.003) and RDP (OR 0.019, 95% CI: 0.002-0.176, P=0.000).ConclusionsThe "Kimura-first" strategy is feasible and safe for RSPDP, with high rates of splenic and splenic vessel preservation. Obvious splenic vessel compression by the tumor can be used as a predictor of splenic vessel preservation with planned RDP.

“Kimura-first” strategy for robotic spleen-preserving distal pancreatectomy: experiences from 61 consecutive cases in a single institution