title: The value of scutum erosion in the diagnosis of temporal bone cholesteatoma.
abstract: CONCLUSIONS
  Scutum erosion has an important role in the diagnosis of attic cholesteatoma, but it does not appear in other types of cholesteatoma in temporal bone. Without scutum erosion, the existence of cholesteatoma cannot be excluded.
  
  
  OBJECTIVE
  To evaluate the value of scutum erosion in the diagnosis of cholesteatoma in temporal bone and its limitations.
  
  
  METHODS
  CT scanning and otoscopy were used in all patients who were suspected of developing, or were probably diagnosed with, cholesteatoma in temporal bone. The condition of the scutum was recorded by otoscopy, CT scanning and surgical findings in all patients with cholesteatomas.
  
  
  RESULTS
  Scutum erosion can be shown in attic retraction with cholesteatoma at an early stage, but not in marginal perforation or with posterior retraction with cholesteatoma, or in central perforation or intact tympanic membrane with cholesteatoma, even in relatively late stages.
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Beijing Tongren Hospital affiliated to Capital Medical University, Beijing, PR China.
authors: Zilong
authors: Z
authors: Yu
authors: Demin
authors: D
authors: Han
authors: Shusheng
authors: S
authors: Gong
authors: Zhenchang
authors: Z
authors: Wang
authors: Luo
authors: L
authors: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D018424:Cholesteatoma, Middle Ear / Q000145:classification / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D004424:Ear Canal / Q000473:pathology*; D004432:Ear, Middle / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D038781:Otoscopy; D013701:Temporal Bone / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014432:Tympanic Membrane / Q000473:pathology; D014433:Tympanoplasty; D055815:Young Adult