The STORM study will examine transoral surgery performed before 31st July 2019. STORM is a retrospective observational cohort study, involving international centres performing TORS for primary OPSCC.~The main aim of this study is to explore the impact of surgical margins on local disease recurrence in primary oropharyngeal squamous cell carci-noma treated with transoral robotic surgery (TORS) without adjuvant therapy.~The primary objective is to report local recurrence-free survival. The primary endpoint will be Local recurrence-free survival time.~The secondary objectives are to report overall survival, disease-specific survival and disease-free survival, and to report post-operative haemor-rhage rates. The secondary endpoints include Overall survival time, Dis-ease-specific survival time, Disease-free survival time, Post-operative haemorrhage time.~Exploratory objective to identify a clinically relevant cut-off for surgical margins as a predictor of local disease recurrence.
Retrospective observational cohort study investigating Single modality Trans Oral Robotic surgery for primary oropharyngeal cancer: exploring the impact of surgical Margins on local disease recurrence.