title: Otogenic brain abscess: management by otologist.
abstract: BACKGROUND
  Fifty per cent of brain abscesses in adults and 25 per cent of those in children are otogenic in origin. The current neurosurgical options are to drain the abscess repeatedly through burr holes or to excise it completely with the capsule. We successfully managed 10 cases of brain abscess by draining through the transmastoid route. The technique and its advantages are discussed.
  
  
  METHODS
  The patients underwent surgery at two different institutions. Computed tomography scanning and magnetic resonance imaging were performed, along with diffusion-weighted imaging and in vivo proton magnetic resonance spectroscopy. The abscesses were drained via a transmastoid route.
  
  
  RESULTS
  In eight cases, ear disease and brain abscess were treated in a single-stage procedure. In the remaining two cases, residual brain abscess was excised subsequently by our neurosurgical colleagues.
  
  
  CONCLUSIONS
  Transmastoid drainage of pus can successfully treat mastoid disease and brain abscess in a single surgical intervention. Residual abscess can be subsequently excised, with relatively reduced morbidity. Repeated needling is also avoided with this approach. Diffusion-weighted imaging and proton magnetic resonance spectroscopy are helpful.
authors.affiliation: Neuro-otology Unit, Department of Neuro-surgery, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India. rajans@sgpgi.ac.in
authors.forename: R
authors.initials: R
authors.lastname: Syal
authors.forename: H
authors.initials: H
authors.lastname: Singh
authors.forename: K K
authors.initials: KK
authors.lastname: Duggal
mesh_terms: D001922:Brain Abscess / Q000209:etiology / Q000601:surgery*; D038524:Diffusion Magnetic Resonance Imaging; D004322:Drainage / Q000379:methods*; D006801:Humans; D007194:India; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D008416:Mastoid / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome