Hospital volume and long-term outcomes of pancreatic cancer: a Finnish population-based nationwide study
2021
Abstract Background Pancreatic cancer surgery is associated with high incidence of short- and long-term morbidity and mortality. The aim of this study was to assess whether the hospital volume of pancreatic surgery is associated with better long-term survival in a population-based setting. Methods All patients who underwent pancreatic resection for cancer in Finland during 1997-2016 were identified from nationwide registries. The follow-up ended on 31 December 2019. Patients were divided into quintiles based on annual hospital volume (4-year moving average): ≤4, 5–9, 10–18, 19–36 and ≥37 resections per year. Cox regression provided hazard ratios (HR) and 95% confidence intervals (CI), adjusted for age, sex, comorbidity and year of surgery. Results The number of diagnosed pancreatic cancers was 22,724. Of these, 1514 underwent pancreatic surgery due to pancreatic ductal adenocarcinoma. The 5-year survival ranged from 12% to 28%, increasing with higher annual operative volume. Adjusted 5-year mortality was lower in all other quintiles compared to the highest annual volume quintile (HR 1.43, 95% CI 1.16-1.75). Thirty-day and 90-day mortality were higher in the three lowest volume quintiles, compared to the highest quintile. Conclusion Higher annual hospital volume of pancreatic surgery for pancreatic ductal adenocarcinoma is associated with improved short- and long-term survival.
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