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Dikken, Johan L; Dassen, Anneriet E; Lemmens, Valery E.P; Putter, Hein; Krijnen, Pieta; van der Geest, Lydia; Bosscha, Koop; Verheij, Marcel; van de Velde, Cornelis J.H; Wouters, Michel W.J.M
European journal of cancer, 05/2012, Letnik: 48, Številka: 7Journal Article
Abstract Background High hospital volume is associated with better outcomes after oesophagectomy and gastrectomy. In the Netherlands, a minimal volume standard of 10 oesophagectomies per year was introduced in 2006. For gastrectomy, no minimal volume standard was set. Aims of this study were to describe changes in hospital volumes, mortality and survival and to explore if high hospital volume is associated with better outcomes after oesophagectomy and gastrectomy in the Netherlands. Methods From 1989 to 2009, 24,246 patients underwent oesophagectomy ( N = 10,025) or gastrectomy ( N = 14,221) in the Netherlands. Annual hospital volumes were defined as very low (1–5), low (6–10), medium (11–20), and high (⩾21). Volume–outcome analyses were performed using Cox regression, adjusting for year of diagnosis, case-mix and the use of multi-modality treatment. Results From 1989 to 2009, the percentage of patients treated in high-volume hospitals increased for oesophagectomy (from 7% to 64%), but decreased for gastrectomy (from 8% to 5%). Six-month mortality (from 15% to 7%) and 3-year survival (from 41% to 52%) improved after oesophagectomy, and to a lesser extent after gastrectomy (6-month mortality: 15%-10%, three-year survival: 55–58%). High hospital volume was associated with lower 6-month mortality (hazard ratio (HR) 0.48, P < 0.001) and longer 3-year survival (HR 0.77, P < 0.001) after oesophagectomy, but not after gastrectomy. Conclusions Oesophagectomy was effectively centralised in the Netherlands, improving mortality and survival. Gastrectomies were mainly performed in low volumes, and outcomes after gastrectomy improved to a lesser extent, indicating an urgent need for improvement in quality of surgery and perioperative care for gastric cancer in the Netherlands.
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