EURORAD ESR

Case 8672

Computed tomography of external auditory canal atresia

Author(s)
Harrop Hansen KM, Wirenfeldt Nielsen Y.
Department of Radiology, University Hospital Gentofte, Copenhagen, Denmark.
 
Patient
female, 10 year(s)
 
 
  • Figure 1
    HRCT of the temporal bones
     

    Axial thin section showing bilateral external auditory canal atresia (arrows).

     

    Coronal thin section of the right middle ear and external auditory canal showing the bony atresia plate (arrow).

     

    Coronal thin section of the left middle ear and external auditory canal showing the bony atresia plate (arrow).

     
     
     
  • Figure 2
    HRCT of the malleoincudal complexes
     

    Axial image showing normal incudomallear articulation in both middle ears.

     

    Coronal image showing normal Incudomallear articulation in both middle ears.

     
     
     
  • Figure 3
    HRCT of the stapes
     

    Normal right stapes (arrow).

     

    Normal left stapes (arrow).

     
     
     
  • Figure 4
    HRCT of the inner ear
     

    Normal formation of the right bony labyrinth and internal acoustic meatus.

     

    Normal formation of the left bony labyrinth and internal acoustic meatus.

     
     
     
  • Figure 5
    HRCT of the facial nerve canal
     

    Normal course of the descending portion of the right facial nerve (arrow).

     

    Normal course of the descending portion of the left facial nerve (arrow).

     
     
     
  • Figure 6
    Volume rendered 3D reconstruction of the auricles
     

    Right auricle.

     

    Left auricle.

     
     
     
Axial thin section showing bilateral external auditory canal atresia (arrows).
 
Coronal thin section of the right middle ear and external auditory canal showing the bony atresia plate (arrow).
 
Coronal thin section of the left middle ear and external auditory canal showing the bony atresia plate (arrow).
 
Axial image showing normal incudomallear articulation in both middle ears.
 
Coronal image showing normal Incudomallear articulation in both middle ears.
 
Normal right stapes (arrow).
 
Normal left stapes (arrow).
 
Normal formation of the right bony labyrinth and internal acoustic meatus.
 
Normal formation of the left bony labyrinth and internal acoustic meatus.
 
Normal course of the descending portion of the right facial nerve (arrow).
 
Normal course of the descending portion of the left facial nerve (arrow).
 
Right auricle.
 
Left auricle.
 
 
 
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