[Experience of diagnosis and treatment for congenital pyriform sinus fistula].

To evaluate the imaging features, clinical presentation, operative methods complication and the surgical outcomes of the congenital pyriform sinus fistula(CPSF). The clinical data of 185 patients with CPSF treated from January 2013 to October 2017 at the First Affiliated Hospital of Zhengzhou University were analyzed retrospectively. The lesions were predominantly on the left side(170/185). Among 185 cases, 146 cases received endoscopic coblation cauterization, 27 cases had traditional open surgery, 8 cases underwent endoscopic coblation cauterization plus traditional open surgery, 2 cases for endoscopic chemocauterization, and 2 cases for endoscopic electrosection. Twenty-eight cases recurred, with a recurrence rate of 15.1%. Postoperative hoarseness occurred in 22 cases, disappeared within 0.5-6.0 months later. Patients with a history of recurrent cervical abscess should be highly suspect the existence of CPSF. Endoscopic coblation cauterization is a kind of surgical method with minimal injury, with low recurrence rate and low operative risk.