In most of the cases incidental diagnosis happens while performing nasal endoscopy. MRI and CT scan can be helpful for further confirmation of diagnosis. On CT scan a low density, well capsulated mass in the roof of nasopharynx is suggestive of Thornwaldt cyst.
Nasopharyngeal cyst
Laryngeal cyst
Laryngocele
Parapharyngeal abscess
Retropharyngeal abscess
Nasal septal abscess
Peritonsillar abscess
Adenoiditis