A Rare Case of Bilateral Second Arch Branchial Fistulae; A Case Report.

Branchial arch anomalies are considered congenital defects that can occur during fetal development. They may present as cysts, sinuses, or fistulae. Anomalies of the second branchial arch are the most common. The existence of bilateral complete fistulae is exceptionally rare. In this case report, a 5-year-old boy presented with recurrent episodes of bilateral neck swelling and watery discharge from openings on the anterolateral sides of his neck since birth. He was diagnosed with bilateral branchial fistulae after confirmation via a contrast-enhanced CT scan. Surgery was performed to entirely excise the fistula tracts bilaterally. Additionally, a bilateral tonsillectomy was performed to help prevent recurrence.