[Nasopharyngeal cysts. Report of four cases and literature review].

Nasopharyngeal cysts although common are not completely understood. They are classified according to their localization and pathogenesis in congenital or acquired and medial or lateral. We report 4 cases: a branchiogenic causing serious otitis, a Tornwaldt's cyst also producing otitis serosa, another asymptomatic Tornwaldt's cyst and a retention cyst which produce an obstructive apnea syndrome. All but the asymptomatic one were operated on transoral, by grasping the cyst and its implantation site. They all remain till now asymptomatic. We review the chapter of nasopharyngeal cysts, discussing their clinicopathological classification, their diagnosis and treatment.