Pancreatic adenocarcinoma: effects of neoadjuvant therapy on post-pancreatectomy outcomes - an American College of Surgeons National Surgical Quality Improvement Program targeted variable review.

Background: As the incidence of pancreatic adenocarcinoma increases, so has the utilization of neoadjuvant therapy. The objective of this study was to evaluate outcomes in patients undergoing neoadjuvant therapy or surgery first for pancreatic adenocarcinoma.

Methods: The ACS-NSQIP 2014-2015 targeted pancreatectomy variables were queried for patients with pancreatic adenocarcinoma who underwent resection. Outcomes of those receiving neoadjuvant therapy were compared to surgery first using a multivariate, logistic regression model.

Results: 3408 patients underwent pancreatectomy; 2596 proximal pancreatectomies, 741 distal pancreatectomies, 64 total pancreatectomies and 7 other pancreatic procedures were performed. Of the 3408 patients identified, 934 (27.5%) received neoadjuvant therapy: 496 chemotherapy alone, 28 radiation alone, and 410 combined chemotherapy/radiation therapy. Overall morbidity and mortality were similar between patients receiving neoadjuvant therapy versus those who underwent surgery first. Neoadjuvant treatment was associated with lower rates of pancreatic fistulas (10.2% vs. 13.2%, P = 0.017), but higher intra/postoperative transfusion rates (27.4% vs. 20.3%, P < 0.0001).

Conclusions: Neoadjuvant therapy appeared to be safe prior to operative intervention as no difference in overall postoperative morbidity or mortality rates were identified. There were increased intra/postoperative transfusions in the neoadjuvant therapy group, but neoadjuvant therapy was associated with lower rates of pancreatic fistulas.