Nationwide Outcome after Pancreatoduodenectomy in Patients at very High Risk (ISGPS-D) for Postoperative Pancreatic Fistula

Objective: To assess nationwide surgical outcome after pancreatoduodenectomy (PD) in patients at very high risk for postoperative pancreatic fistula (POPF), labeled as International Study Group for Pancreatic Surgery (ISGPS) category D. Background: Morbidity and mortality after ISGPS-D PD is perceived so high that a recent randomized trial advocated prophylactic total pancreatectomy (TP) as alternative aiming to lower this risk. However, current outcomes of ISGPS-D PD remain unknown as large nationwide series are lacking. Methods: Nationwide retrospective analysis including consecutive patients undergoing ISGPS-D PD (ie, soft texture and pancreatic duct diameter ≤3 mm), using the mandatory Dutch Pancreatic Cancer Audit (2014-2021). Primary outcome was in-hospital mortality, and secondary outcomes included major morbidity (ie, Clavien-Dindo grade ≥IIIa) and POPF (ISGPS grade B/C). The use of prophylactic TP to avoid POPF during the study period was assessed. Results: Overall, 1402 patients were included. In-hospital mortality was 4.1% (n=57), which decreased to 3.7% (n=20/536) in the last 2 years. Major morbidity occurred in 642 patients (45.9%) and POPF in 410 (30.0%), which corresponded with failure-to-rescue in 8.9% (n=57/642). Patients with POPF had increased rates of major morbidity (88.0% vs. 28.3%; P<0.001) and mortality (6.3% vs. 3.5%; P=0.016) compared to patients without POPF. Among 190 patients undergoing TP, prophylactic TP to prevent POPF was performed in 4 (2.1%). Conclusions: This nationwide series found a 4.1% in-hospital mortality after ISGPS-D PD with 45.9% major morbidity, leaving little room for improvement through prophylactic TP. Nevertheless, given the outcomes in the 30% of patients who develop POPF, future randomized trials should aim to prevent and mitigate POPF in this high-risk category.