[A preliminary study on low temperature plasma obliteration for pyriform sinus fistula by visual laryngoscope].

To investigate the effect of low-temperature plasma obliteration for pyriform sinus fistula by visual laryngoscope. The clinical data of 29 cases with congenital pyriform sinus fistula receiving low temperature plasma obliteration by visual laryngoscope during March 2019 to August 2021 was retrospectively analyzed in department of Otolaryngology Head and Neck Surgery of Children's Hospital of Nanjing Medical University. Nineteen cases accepted the pyriform sinus fistula probing + fistula obliteration, 6 cases accepted the pyriform sinus fistula probing + fistula obliteration + neck abscess incision and drainage, and 4 cases with cervical abscess accepted the pyriform sinus fistula probing + fistula obliteration. All cases had no obvious complications. Two cases had vocal cord impairment after operations and recovered after one month. There was no recurrence in 2 to 30 months follow up, with mean 16 months follow up. Low-temperature plasma obliteration of pyriform sinus fistula by visual laryngoscope is a safe and effective surgical method with little trauma and short hospital stay. It could be the first choice for the treatment of pyriform sinus fistula. Incision and drainage of neck abscess and pyriform sinus fistula obliteration could be performed concurrently.