title: CT cisternography in congenital perilymphatic fistula of the inner ear.
abstract: Perilymphatic fistulas of the inner ear constitute abnormal leaks of perilymphatic fluid into the middle ear or mastoid air cell system and represent a rare cause of otorrhea. We report the case of a 5-month-old child presenting with sudden otorrhea. High resolution CT cisternography showed a malformation of the middle ear and a passage of contrast-enhanced CSF into the tympanic cavity through the left oval window. Surgery confirmed a tear of the tympanic membrane as well as a stapes malformation with aplasia of the crura and an associated perilymphatic fistula through a defect in the stapes footplate. The fistula was closed with adipose tissue from the ear lobe.
authors.affiliation: Department of Neuroradiology, IDR, Inselspital, University of Bern, Switzerland.
authors.forename: K O
authors.initials: KO
authors.lastname: Lövblad
authors.forename: C
authors.initials: C
authors.lastname: Ozdoba
authors.forename: S
authors.initials: S
authors.lastname: Negri
authors.forename: L
authors.initials: L
authors.lastname: Remonda
authors.forename: D
authors.initials: D
authors.lastname: Schinke
authors.forename: R
authors.initials: R
authors.lastname: Häusler
authors.forename: G
authors.initials: G
authors.lastname: Schroth
mesh_terms: D002558:Cerebrospinal Fluid Otorrhea / Q000000981:diagnostic imaging; D002946:Cisterna Magna / Q000000981:diagnostic imaging*; D004427:Ear Diseases / Q000151:congenital / Q000000981:diagnostic imaging; D005260:Female; D005402:Fistula / Q000151:congenital* / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D007759:Labyrinth Diseases / Q000151:congenital* / Q000000981:diagnostic imaging*; D010046:Oval Window, Ear / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D013199:Stapes / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014432:Tympanic Membrane / Q000000981:diagnostic imaging / Q000293:injuries