Objectives The aim of this multicenter retrospective cohort study was to compare efficacy and subsequent postoperative treatment between transoral robotic surgery (TORS) any non-robotic in Japanese patients with early oropharyngeal squamous cell carcinoma (OPSCC), hypopharyngeal SCC (HPSCC), or supraglottic (SGSCC). Materials methods Clinical information surgical outcomes were compared early-st...