Diagnosis: Pyriform sinus fistula
The patient underwent a fistulectomy. During the operation, the thyroid-cricoid joint was dislocated, a fistula opening was noted at the inner aspect of the thyroid cartilage, and a tract going into pyriform sinus was seen and ligated (Figure 3). Some sclerotic thyroid tissue of the left superior pole due to previous inflammation was also removed. The pathologic findings showed a sinus tract lined with squamous epithelium (Figure 4).
Radiology Quiz Case 2: Diagnosis. Arch Otolaryngol Head Neck Surg. 2012;138(5):520. doi:10.1001/archoto.2012.445b
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