Multicenter study to assess surgical treatments of 452 sinonasal intestinal-type adenocarcinomas: A REFCOR study

Eur J Surg Oncol. 2023 Jan;49(1):39-46. doi: 10.1016/j.ejso.2022.07.021. Epub 2022 Aug 13.

Abstract

Purpose: The objective was to assess the local oncological outcomes of endoscopic versus external surgical treatment of sinonasal intestinal-type adenocarcinomas (ITAC) and the factors of recurrence.

Methods: a retrospective non-randomized case-control multicenter study was carried out, including 452 untreated sinonasal ITACs recruited from 10 tertiary referral centers. The tumors were re-classified according to the UICC 2017 (pT). Survival curves were obtained using the Kaplan-Meier method. Univariate analysis was done with the log-rank test. Multivariate analysis was performed with a Cox model adjusted for age, T stage, and radiotherapy. A binary logistic regression compared surgical complications and performed two supplementary analyses on positive margins.

Results: We compared 195 and 257 patients operated by the external and endoscopic approach, respectively. The mean follow-up was 59.2 ± 48.7 months. Post-operative margins were invaded in 30.6 versus 18.9% of patients, respectively (p = 0.007). The overall recurrence rate was 33.8 versus 24.6%, respectively (p = 0.034). There was a significant difference in favor of the endoscopic approach regarding local recurrence-free survival thanks to better surgical margins in univariate and multivariate analysis (Odd Ratio = 2.01 (1.2-3.36) p = 0.0087). The complication rate (Odds Ratio = 3.4 (1.79-6.32) p < 0.001) was significantly lower in the endoscopic group. The histological positivity of signet-ring cells shows a statistically significant difference in recurrence-free survival (p = 0.0028).

Conclusion: the oncological control of ITAC is better through the endoscopic approach, with negative margins and the absence of signet-ring-cells, two independent factors of recurrence.

Keywords: Adenocarcinoma; Endoscopic sinus surgery; Nasal cancer; REFCOR; Sinus cancer; Wood dust.

Publication types

  • Multicenter Study

MeSH terms

  • Adenocarcinoma* / pathology
  • Endoscopy
  • Humans
  • Nose Neoplasms* / therapy
  • Paranasal Sinus Neoplasms* / surgery
  • Retrospective Studies