“…1,5 Adenoidectomy and other inflammatory insults to the area have been implicated, inconclusively, as mechanisms by which a pharyngeal bursa initially becomes obstructed, leading to the formation of a Tornwaldt's cyst from what was once just a potential space. 6 The differential diagnosis of cystic lesion in the posterior wall of the nasopharynx should also include meningoencephaloceles, sphenoid sinus mucoceles, Rathke's pouch cysts, branchial cleft cysts, and adenoid retention cysts.…”