title: Delayed retroauricular cerebrospinal fluid (CSF) collection in cochlear implantation.
abstract: In the literature, this is the first description of a delayed retroauricular cerebrospinal fluid (CSF) collection in a child after 18 months of cochlear implantation. During surgical revision, anomalous thinning of the dura and leakage of CSF was found beneath the receiver, requiring  local sealing and repositioning. Exposure of the dura is a procedure usually performed during housing of the receiver to avoid excessive protrusion of the implant in subjects with insufficient bone thickness. In most cases, this has proved to be a safe procedure. However, in some cases, as  in children, exposure of the dura should be undertaken with care.
authors.affiliation: Neurology and Otolaryngology Department,University 'La Sapienza' of Rome, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Filipo
authors.forename: Edoardo
authors.initials: E
authors.lastname: Covelli
authors.forename: Chiara
authors.initials: C
authors.lastname: D'elia
authors.forename: Patrizia
authors.initials: P
authors.lastname: Mancini
mesh_terms: D002555:Cerebrospinal Fluid; D002675:Child, Preschool; D019929:Cochlear Implantation / Q000009:adverse effects* / Q000379:methods; D003054:Cochlear Implants; D004322:Drainage; D004388:Dura Mater; D006097:Granulation Tissue; D006319:Hearing Loss, Sensorineural / Q000601:surgery*; D006801:Humans; D008297:Male; D013997:Time Factors