A Case of Pyriform Sinus Fistula Infection with Double Tracts

Figure 2

(a) Anterior view of the two resected tracts and a part of the thyroid. 1 shows a brownish tract that terminated at the upper part of the thyroid. 2 showed a crystal violet-stained tract that ended lower than the brownish tract and on the lateral side of the thyroid compared with 1 tract. (b) The posterior view of the resected tissue. The crystal violet-stained tract 2 was attached lower and more lateral than the brownish tract 1.

(a)

(b)