Abstract:Objective To evaluate the efficacy and side effects of radiotherapy on parotid fistula after the operation of buccal cancer.Methods A retrospective analysis was performed on 37 patients with parotid gland fistula after treatment of oral and buccal cancer, who were admitted to Department of Head and Neck Surgery,Hunan Cancer Hospital from January 2010 to January 2020. All patients were irradiated with 6Mev electronic line radiation, 2 Gy each time, once a day, 5 times a week, with a total dose of 8~18 Gy (mean dose of 9.7 Gy). Radiotherapy covered the whole area of the parotid gland.Results All 37 patients with parotid fistula who received radiotherapy were cured, the cure rate was 100%. After follow-up for 3 months, there was no recurrence of parotid fistula. Only 1 patient of all patients had slight dry mouth and taste changes, but no other related adverse reactions.Conclusions Radiotherapy is suitable for the treatment of parotid fistula after oral-buccal carcinoma.It is worth to be popularized and applied in clinic because of its advantages of fast effective treatment, remarkable effect and no obvious complications.