Thornwaldt's cyst is seen in:
Larynx
Nasopharynx
Base of tongue
Floor of mouth
Thomwaldt's cyst arises from pharyngeal bursa. The latter is located in the middle of posterosuperior wall of the nasopharynx surrounded by adenoid tissue.Rathke's pouch is represented by a dimple high in the nasopharynx. Inferior to this within the adenoid mass is the pharyngeal bursa.
Nose and PNS