Several studies showed safety and feasibility of laparoscopic distal pancreatectomy (LDP) as compared to open distal pancreatectomy (ODP). Patients who underwent LDP or ODP (2015-2019) were included. A 1:1 propensity score matching (PSM) was used to reduce the effect of treatment selection bias. Aim of this study was to identify those factors influencing the loss of benefit (defined as a significantly better outcome compared to ODP) after LDP. Overall, 387 patients underwent DP (n = 250 LDP, n = 137 ODP). After PSM, 274 patients (n = 137 LDP, n = 137 ODP) were selected. LDP was associated with reduced intraoperative blood loss (median: 200mL vs. 250mL, p < 0.001), decreased wound infection rate (1% vs. 9%, p = 0.044) and shorter time to functional recovery (TFR) (median: 4days vs. 5days, p = 0.002). Consequently, TFR > 5days and blood loss > 250mL were defined as loss of benefit after LDP. In the LDP group, age > 70years [Odds Ratio (OR) 2.744, p = 0.022] and duration of surgery > 208min (OR 2.957, p = 0.019) were predictors of TFR > 5days and intraoperative blood loss > 250mL, respectively. No differences in terms of TFR were found between ODP and LDP groups in patients > 70years (p = 0.102). Intraoperative blood loss was significantly higher in the ODP group, also when the analysis was limited to surgical procedures with operative time > 208min (p = 0.003). In conclusion, LDP seems comparable to ODP in terms of TFR in patients aged > 70years. This finding could be helpful in the choice of the best surgical approach in elderly patients undergoing potentially challenging DPs.
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