Right-Sided Complete Third Branchial Cleft Fistula.

Branchial cleft anomalies occur due to insufficient closure of cavities during embryogenesis. These anomalies consist of cysts, sinuses, and fistulas, with the rarest type being fistulas. A 29-year-old male presented at the authors' clinic with a right-sided complete third branchial cleft fistula. Fistula track excision surgery was successfully performed and no recurrence was observed in the 12-month follow-up after the surgery. While second branchial cleft fistula is the most common, third and fourth brancial cleft fistulas are extremely rare. In addition, they are usually incomplete and almost always on the left side.