This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
Thornwaldt's cyst is seen in: 
Select and explain. 
A. Larynx, B. Nasopharynx, C. Base of tongue, D. Floor of mouth
B: Nasopharynx
Answer: B: Nasopharynx 
Explanation: 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.