LARGE THYROGLOSSAL DUCT CYST WITH ATYPICAL ENDOLARYNGEAL PRESENTATION - A RARE ENTITY.

Abstract

Thyroglossal duct cysts are the commonest cystic neck swellings, usually seen in pediatric population. They are typically found in midline, and mostly infra-hyoid. Very rarely thyroglossal duct cysts are found with atypical endolaryngeal presentation. Literature search revealed 15 cases of endolaryngeal thyroglossal duct cysts reported in literature. In this article, we report the 16th case of thyroglossal duct cyst with endolaryngeal extension. This being a very rare case of a large cyst which presented with dysphonia in a 41-years-male who was referred to us for laryngoscopic examination by a speech language pathologist (SLP) His primary complaint was dysphonia and further inquiry revealed a painless, slow growing cystic neck swelling of submandibular triangle. It was diagnosed as a thyroglossal duct cyst with endolaryngeal extension following laryngoscopy and Computed tomography. Cyst was surgically removed with Sistrunks procedure with no recurrence and normal phonation without any therapeutic intervention by SLP post operatively. Literature search revealed that TGDCs with endolaryngeal extension are very rare.