EURORAD ESR

Case 784

Fibrous dysplasia of the temporal bone

Author(s)
SK Karampekios, E Chryssou, Ch Papadakis, A Nikolidakis , N Gourtsogiannis.
 
Patient
male, 47 year(s)
 
 
  • Figure 1
    Plain radiograph

    Lateral plain film shows bony overgrowth and associated sclerosis in the temporal bone.

     
    Area of Interest: unknown; Imaging Technique: Plain radiograph;
     
     
  • Figure 2
    Computed tomography
     

    Computed tomography , axial section at the level of carotid canal, shows extensive thickening of the temporal bone and narrowing of the ipsilateral external auditory canal.

     
    Area of Interest: unknown; Imaging Technique: Computed tomography;

    Computed tomography , axial section, at the level of internal auditory canal. Extensive thickening and ground-glass appearance of the squamous part and the anterior part of the petrous apex of the left temporal...

     
    Area of Interest: unknown; Imaging Technique: Computed tomography;
     
     
  • Figure 3
    Magnetic resonance imaging of the skull base
     

    T2-weighted axial image, at the upper pontine level. There is hypertrophy and sclerosis of the squamous part of the temporal bone ,which exhibits very low signal . Additionally, an area of high signal intensity at the...

     
    Area of Interest: unknown; Imaging Technique: Magnetic resonance imaging of the skull base;

    T1-weighted ,Gd-enhanced, coronal image . There is marked bone thickening and very low signal intensity of the left temporal bone. A moderate meningeal enhancement is demonstrated adjacent to the lesion, without any...

     
    Area of Interest: unknown; Imaging Technique: Magnetic resonance imaging of the skull base;
     
     
  • Figure 4
    High Resolution Computed Tomography of the skull base, one year after surgery.

    Axial section at the level of the middle ear shows progression of the bony changes at the left temporal bone, as well as early involvement of the contralateral temporal bone.

     
    Area of Interest: unknown; Imaging Technique: High Resolution Computed Tomography of the skull base, one year after surgery.;
     
     
Lateral plain film shows bony overgrowth and associated sclerosis in the temporal bone.
 
Computed tomography , axial section at the level of carotid canal, shows extensive thickening of the temporal bone and narrowing of the ipsilateral external auditory canal.
 
Computed tomography , axial section, at the level of internal auditory canal. Extensive thickening and ground-glass appearance of the squamous part and the anterior part of the petrous apex of the left temporal bone is revealed. The left middle ear and the ipsilateral mastoid air cells are obliterated with inflammatory tissue .
 
T2-weighted axial image, at the upper pontine level. There is hypertrophy and sclerosis of the squamous part of the temporal bone ,which exhibits very low signal . Additionally, an area of high signal intensity at the periphery of the left temporal lobe is depicted, probably representing mild edema , due to pressure phenomena by the bony lesions.
 
T1-weighted ,Gd-enhanced, coronal image . There is marked bone thickening and very low signal intensity of the left temporal bone. A moderate meningeal enhancement is demonstrated adjacent to the lesion, without any evidence of enhancement within the affected bone.
 
Axial section at the level of the middle ear shows progression of the bony changes at the left temporal bone, as well as early involvement of the contralateral temporal bone.
 
 
 
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