Thornwaldt's cyst is seen in:
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.
Larynx
Nasopharynx
Base of tongue
Floor of mouth
Nose and PNS