Lower survival for surgical treatment of HPV-related oropharynx cancer at community cancer centers
Menée à partir de données de la "US National Cancer Database" portant sur 5 406 patients traités par chirurgie pour un cancer de l'oropharynx lié au papillomavirus humain et diagnostiqué entre 2010 et 2019, cette étude examine les tendances en matière d'utilisation de la chirurgie transorale assistée par robot (CTAR), les taux de marges chirurgicales positives, la qualité des traitements adjuvants et la survie globale à 5 ans en fonction du type d'établissement et du volume de CTAR pratiquées
Background : The rate of primary surgery for human papillomavirus-related oropharynx cancer (HPVOPC) has recently declined, while utilization of transoral robotic surgery (TORS) has lagged at community cancer centers (CCs). We hypothesize that differences in overall survival (OS) exist between patients undergoing surgery for HPVOPC at CCs and low (<15 TORS/year; LVACs) and high (≥15 TORS/year; HVACS) TORS volume academic centers.
Methods : Cases from the US National Cancer Database with a diagnosis of HPVOPC from 2010-2019 that underwent primary surgical treatment were included. Trends in TORS utilization, rates of positive surgical margins (PMs), quality of adjuvant treatment and 5-year OS were compared between CCs, LVACs and HVACs.
Results : 5,406 cases met study criteria. A significantly lower proportion of cases at CCs utilized TORS than at LVACs or HVACs (26.2% vs 44.0% vs 73.9%, respectively, p < .001). The rate of PMs was significantly higher at CCs than at LVACs or HVACs (25.7% vs 15.3% vs 9.2%, p < .001). A greater proportion of cases undergoing adjuvant radiotherapy (RT) received prolonged courses (23.6% vs 13.1% vs 8.8%, p < .001) or excessive doses (16.5% vs 11.5% vs 8.7%, p < .001) of RT at CCs than at LVACs or HVACs, respectively. 5-year OS was lowest at CCs (85.2%, 95%CI: 81.7-88.2%), intermediate at LVACs (88.9%, 95%CI: 87.2-90.4%), and highest at HVACs (91.4%, 95%CI: 89.5-92.9%; pLR<0.01).
Conclusions : Significant differences in the type and quality of surgical and adjuvant treatment for HPVOPC exist between facility types based on TORS volume. Overall survival was lowest at CCs, intermediate at LVACs and highest at HVACs.
Journal of the National Cancer Institute , résumé, 2023