<prompt> Thornwaldts cyst is seen in:LarynxNasopharynxBase of tongueFloor of mouth  <response>: Thomwaldts cyst arises from pharyngeal bursa. The latter is located in the middle of posterosuperior wall of the nasopharynx surrounded by adenoid tissue.Rathkes pouch is represented by a dimple high in the nasopharynx. Inferior to this within the adenoid mass is the pharyngeal bursa. 