title: [Petrositis due to acute otitis media: a case report and literature review].
abstract: OBJECTIVE
  To study the clinical features and conservative treatment of petrositis.
  
  
  METHODS
  One case of petrositis was reported and literatures were reviewed. Opacificated air cells in CT, and anomalous, discontinuous hypersignal in MRI T1 and T2 provided evidence of infection of the apex of the petrous temporal bone.
  
  
  RESULTS
  The patient recovered totally after conservative treatment with intravenous antibiotic, glucocorticoid and neurotrophic therapy, and no recurrence occurred in 1 year follow-up. CT rescan showed the clear air cells of the petrous apex 4 months later.
  
  
  CONCLUSIONS
  Petrositis can be diagnosed with specific clinical features, the image of CT and MRI. Conservative treatment could be a good choice.
authors.affiliation: Department of Otorhinolaryngology, Beijing Children's Hospital, Affiliated Capital Medical University, Beijing, 100045, China. cmile@sina.com
authors.forename: Min
authors.initials: M
authors.lastname: Chen
authors.forename: Bing
authors.initials: B
authors.lastname: Liu
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.forename: Shilin
authors.initials: S
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D010033:Otitis Media / Q000150:complications* / Q000175:diagnosis; D059270:Petrositis / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D014057:Tomography, X-Ray Computed