title: [Congenital cysts of the oval window (author's transl)].
abstract: A 3 year old child with recurrent pneumococcal meningitis and a congenital cyst of the oval window is presented. An aqueous middle ear effusion was found and scintigraphy demonstrated a middle ear CSF leak. Surgical exploration revealed a cyst originating from the stapes footplate. The origin of this malformation is discussed and its possible presence in recurrent mengitis is stressed.
mesh_terms: D002675:Child, Preschool; D003560:Cysts / Q000134:cerebrospinal fluid / Q000150:complications / Q000151:congenital* / Q000601:surgery; D005260:Female; D006801:Humans; D007759:Labyrinth Diseases / Q000134:cerebrospinal fluid / Q000150:complications / Q000151:congenital* / Q000601:surgery; D008586:Meningitis, Pneumococcal / Q000209:etiology; D010046:Oval Window, Ear / Q000601:surgery; D014722:Vestibule, Labyrinth / Q000601:surgery
vernacular_title: Kongenitale Zyste im ovalen Fenster.