[Advances in endoscopic treatment of congenital pyriform sinus fistula in children].

Pyriform sinus fistula is a rare clinical disease, often with recurrent acute suppurative thyroiditis or neck infection in children.The traditional method treatment is complete resection of the fistula with or without hemithyroidectomy in external cervical surgical approach, but in recent years, minimally invasive endoscopic occlusion of the internal opening for the treatment of pyriform sinus fistula is performed in many hospitals, including electrocautery, chemocautery, laser cauterization, biocauterization, and suture closure. Literatures about endoscopic management of pyriform sinus fistula in children are reviewed and various surgical methods, complications and success rate are evaluated.