<prompt> Thyroglossal cyst moves with protrusion of tongue because of attachment to:Foramen caecumThyroid cartilagePharyngeal wallTonsils  <response>: Ans: a Foramen caecum Ref: Bailey, 24th ed, p. 777Thyroglossal cyst moves with protrusion of tongue because of its attatchment to foramen caecum.Thyroglossal cyst- May present in any part of thyroglossal tract- Common situations in order of frequency- Subhyoid Region of thyroid cartilage Suprahyoid- Occupies midline except in region of thyroid cartilage- Complication - thyroglossal fistula- Treatment of thyroglossal cyst and fistula--Sistrunk operationCentral part of body of hyoid, together with the cyst or fistula is excised, upwards towards the foramen caecum with a core of lingual muscle. 