Abstract
Thornwaldt cyst is a rare cystic formation, located along the midline of the nasopharynx. We present the case of a 60-year-old man with impaired nasal breathing and a several months-long history of serous otitis media. His only concomitant disease was arterial hypertension. The diagnostic imaging tests revealed a well-rounded cystic formation involving the upper part of the nasopharynx, characteristic of Thornwaldt cyst. Following, endoscopic transnasal marsupialization was performed and the benign cystic nature was confirmed on histopathology. The patient responded to the administered treatment and reported no persistence or emergence of new symptoms. The current case presents a symptomatic Thornwaldt cyst successfully treated by endoscopic transnasal marsupialization.