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2023 (English)In: Annals of Surgery, ISSN 0003-4932, E-ISSN 1528-1140, Vol. 277, no 3, p. 429-436Article in journal (Refereed) Published
Abstract [en]
OBJECTIVE: To examine the hypothesis that survival in esophageal cancer increases with more removed lymph nodes during esophagectomy up to a plateau, after which it levels out or even decreases with further lymphadenectomy.
SUMMARY BACKGROUND DATA: There is uncertainty regarding the ideal extent of lymphadenectomy during esophagectomy to optimize long-term survival in esophageal cancer.
METHODS: This population-based cohort study included almost every patient who underwent esophagectomy for esophageal cancer in Sweden or Finland in 2000-2016 with follow-up through 2019. Degree of lymphadenectomy, divided into deciles, was analyzed in relation to all-cause 5-year mortality. Multivariable Cox regression provided hazard ratios (HR) with 95% confidence intervals (95% CI) adjusted for all established prognostic factors.
RESULTS: Among 2,306 patients, the 2nd (4-8 nodes), 7th (21-24 nodes) and 8th decile (25-30 nodes) of lymphadenectomy showed the lowest all-cause 5-year mortality compared to the 1st decile (HR = 0.77, 95% CI 0.61-0.97, HR = 0.76, 95% CI 0.59-0.99, and HR = 0.73, 95% CI 0.57-0.93, respectively). In stratified analyses, the survival benefit was greatest in decile 7 for patients with pathological T-stage T3/T4 (HR = 0.56, 95% CI 0.40-0.78), although it was statistically improved in all deciles except decile 10. For patients without neoadjuvant chemotherapy, survival was greatest in decile 7 (HR = 0.60, 95% CI 0.41-0.86), although survival was also statistically significantly improved in deciles 2, 6, and 8.
CONCLUSION: Survival in esophageal cancer was not improved by extensive lymphadenectomy, but resection of a moderate number (20-30) of nodes was prognostically beneficial for patients with advanced T-stages (T3/T4) and those not receiving neoadjuvant therapy.
Place, publisher, year, edition, pages
Lippincott Williams & Wilkins, 2023
Keywords
esophageal cancer; esophagectomy; lymph node; lymphadenectomy; surgery; survival
National Category
Cancer and Oncology
Identifiers
urn:nbn:se:liu:diva-179522 (URN)10.1097/SLA.0000000000005028 (DOI)000928273100045 ()34183514 (PubMedID)
Note
Funding: Swedish Research Council [201900209]; Swedish Cancer Society [180684]
2021-09-232021-09-232023-03-13Bibliographically approved