A systematic review of transoral robotic surgery and radiotherapy for early oropharynx cancer: a systematic review

Abstract

Objectives/hypothesis: To demonstrate the comparative effectiveness of transoral robotic surgery (TORS) to intensity modulated radiotherapy (IMRT) for early T-stage oropharyngeal cancer.

Data sources: The search included MEDLINE, EMBASE, CENTRAL, PsychInfo, CINAHL, and bibliographies of relevant studies through September 2012.

Methods: Studies included patients treated for early T-stage oropharynx cancer with TORS or IMRT. Study retrieval and data extraction were conducted in duplicate and resolved by consensus. Treatment- specific details, as well as recurrence, survival, and adverse events, were collected. Methodologic quality for each study was appraised.

Results: Twenty case series, including eight IMRT studies (1,287 patients) and 12 TORS studies (772 patients), were included. Patients receiving definitive IMRT also received chemotherapy (43%) or neck dissections for persistent disease (30%), whereas patients receiving TORS required adjuvant radiotherapy (26%) or chemoradiotherapy (41%). Two-year overall survival estimates ranged from 84% to 96% for IMRT and from 82% to 94% for TORS. Adverse events for IMRT included esophageal stenosis (4.8%), osteoradionecrosis (2.6%), and gastrostomy tubes (43%)-and adverse events for TORS included hemorrhage (2.4%), fistula (2.5%), and gastrostomy tubes at the time of surgery (1.4%) or during adjuvant treatment (30%). Tracheostomy tubes were needed in 12% of patients at the time of surgery, but most were decannulated prior to discharge.

Conclusion: This review suggests that survival estimates are similar between the two modalities and that the differences lie in adverse events.

Keywords: IMRT; TORS; adverse events; oropharynx cancer; outcomes; survival.