A case of bilateral pyriform sinus fistulas

Abstract

Pyriform sinus fistulas are usually unilateral, and bilateral cases are rare. We report a case of bilateral pyriform sinus fistulas.
A 22-year-old man who complained of left neck pain had a left neck abscess. Video fluorography revealed a left pyriform sinus fistula. When we used a curved laryngoscope during the operation, we found fistulas in both sides of the pyriform sinus. The curved laryngoscope enabled a wide field of view and confirmed the right fistula that could not be identified by the video fluorography. Only the fistula on the left side was removed surgically; the fistula on the right side was observed. In the future, the use of a curved laryngoscope is expected to increase the number of cases in which fistulas that cannot be identified by video fluorography are recognized; countermeasures need to be investigated.