Abstract:ObjectiveTo investigate the changes of voice quality in patients after surgery of thyroglossal duct cyst (TDC).MethodsFortynine patients (24 males and 25 females) undergoing surgery of TDC from Jan 2018 to Dec 2019 were included. Their age ranged from 22 to 65 years old with an average of (41.55±11.78). Before surgery and one week as well as 6 months after surgery, subjective evaluations including voice handicap index (VHI) and GRBAS, objective evaluation of acoustic analysis as well as stroboscopic laryngoscopy were performed in all patients. The pre and postoperative results were compared.Results①The evaluations of VHI showed significant difference between preoperative and one week postoperative emotional (E) scores in female patients(P<0.05), and insignificant difference between the preoperative and 6 months postoperative ones. The evaluations revealed that their differences between the preoperative and postoperative functional (F) scores as well as physiological (P) scores were both insignificant. Meanwhile, the differences between preoperative and postoperative VHI scores in male patients were all insignificant. ②The evaluations of GRBAS showed that the preoperative scores of breathiness (B) and asthenia (A) were significantly different from those of one week after operation in female patients (both P<0.05), and their differences between the preoperative and 6 months after operation were insignificant. The evaluations revealed insignificant differences between their preoperative grade (G), roughness (R) as well as strain (S) scores and the postoperative ones. There were no significant differences between the pre and postoperative GRBAS scores in male patients. ③Acoustic analysis of voice demonstrated that the preoperative fundamental frequency (F0) and maximum phonation time (MPT) in both male and female patients were significantly different from those of one week after operation (all P<0.05), but the differences between the preoperative and 6 months after operation were insignificant. The differences between pre and postoperative jitter and shimmer in both male and female patients were insignificant.ConclusionPatients with TDC may have transient changes in voice evaluation after operation. Voice evaluation, speech training or psychological intervention as soon as possible are beneficial to their voice rehabilitation.