• L R van der Werf, J L Dikken, E M van der Willik, M I van Berge Henegouwen, Nieuwenhuijzen G A P GAP Department of Surgery, Catharina Hospital, Eindhoven, The Netherlands., Wijnhoven B P L BPL Department of Surgery, Erasmus University Medical Centre, Rotterdam, The Netherlands. Electronic address: B.wijnhoven@erasmusmc.nl., and Dutch Upper Gastrointestinal Cancer Audit (DUCA) group.
• Department of Surgery, Erasmus University Medical Centre, Rotterdam, The Netherlands.
• Eur. J. Cancer. 2018 Mar 1; 91: 76-85.

IntroductionThe optimal time between end of neoadjuvant chemoradiotherapy (nCRT) and oesophagectomy is unknown. The aim of this study was to assess the association between this interval and pathologic complete response rate (pCR), morbidity and 30-day/in-hospital mortality.MethodsPatients with oesophageal cancer treated with nCRT and surgery between 2011 and 2016 were selected from a national database: the Dutch Upper Gastrointestinal Cancer Audit (DUCA). The interval between end of nCRT and surgery was divided into six periods: 0-5 weeks (n = 157;A), 6-7 weeks (n = 878;B), 8-9 weeks (n = 972;C), 10-12 weeks (n = 720;D), 13-14 weeks (n = 195;E) and 15 or more weeks (n = 180;F). The association between these interval groups and outcomes was investigated using univariable and multivariable analysis with group C (8-9 weeks) as reference.ResultsIn total, 3102 patients were included. The pCR rate for the groups A to F was 31%, 28%, 26%, 31%, 40% and 37%, respectively. A longer interval was associated with a higher probability of pCR (≥10 weeks for adenocarcinoma: odds ratio [95% confidence interval]: 1.35 [1.00-1.83], 1.95 [1.24-3.07], 1.64 [0.99-2.71] and ≥13 weeks for squamous cell carcinoma: 2.86 [1.23-6.65], 2.67 [1.29-5.55]. Patients operated ≥10 weeks after nCRT had the same probability for intraoperative/postoperative complications. Patients from groups D and F had a higher 30-day/in-hospital mortality (1.80 [1.08-3.00], 3.19 [1.66-6.14]).ConclusionAn interval of ≥10 weeks for adenocarcinoma and ≥13 weeks for squamous cell carcinoma between nCRT and oesophagectomy was associated with a higher probability of having a pCR. Longer intervals were not associated with intraoperative/postoperative complications. The 30-day/in-hospital mortality was higher in patients with extended intervals (10-12 and ≥15 weeks); however, this might have been due to residual confounding.Copyright © 2017 Elsevier Ltd. All rights reserved.

63 keywords...

hide…