EURORAD ESR

Case 9004

Petrous apicitis

Author(s)
Vazquez E, Delgado I, Fumarola F
 
Patient
male, 3 year(s)
 
 
  • Figure 1
    Axial T1 shows a subtle abnormality on left petrous apex

    Subtle enlargement of the left petrous apex.

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Infection;
     
     
  • Figure 2
    Axial T2 with increased signal on left petrous apex

    Axial T2WI shows the hyperintensity involving the left petrous apex with some associated middle ear fluid.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Infection;
     
     
  • Figure 3
    Restricted diffusion on DI

    The abnormal left petrous apex demonstrates partial diffusion restriction on DI.

     
    Area of Interest: Head and neck; Imaging Technique: MR-Diffusion/Perfusion; Procedure: Diagnostic procedure; Special Focus: Infection;
     
     
  • Figure 4
    Enhanced axial MR T1-weighted image

    Contrast-enhancing soft tissue within the lesion is demonstrated on enhanced axial T1 image.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Contrast agent-intravenous; Special Focus: Infection;
     
     
  • Figure 5
    Enhanced coronal T1-weighted image

    Contrast-enhancing soft tissue within the lesion is demonstrated on enhanced coronal T1 image.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Contrast agent-intravenous; Special Focus: Infection;
     
     
  • Figure 6
    Axial high-resolution CT of the temporal bone

    Axial high-resolution CT of the temporal bone obtained with bone algorithm demonstrates the osteolytic lesion involving the left petrous apex and extending to the adjacent sphenoidal clivus.

     
    Area of Interest: Ear / Nose / Throat; Imaging Technique: CT-High Resolution; Procedure: Diagnostic procedure; Special Focus: Infection;
     
     
  • Figure 7
    Scintigraphy

    Scintigraphy was also performed to rule out other bony lesions.

     
    Area of Interest: Bones; Imaging Technique: Nuclear medicine conventional; Procedure: Diagnostic procedure; Special Focus: Infection;
     
     
  • Figure 8
    FDG-PET/CT

    FDG-PET/CT only shows increased FDG uptake in the left petrous apex.

     
    Area of Interest: Head and neck; Imaging Technique: PET-CT; Procedure: Diagnostic procedure; Special Focus: Infection;
     
     
Subtle enlargement of the left petrous apex.
 
Axial T2WI shows the hyperintensity involving the left petrous apex with some associated middle ear fluid.
 
The abnormal left petrous apex demonstrates partial diffusion restriction on DI.
 
Contrast-enhancing soft tissue within the lesion is demonstrated on enhanced axial T1 image.
 
Contrast-enhancing soft tissue within the lesion is demonstrated on enhanced coronal T1 image.
 
Axial high-resolution CT of the temporal bone obtained with bone algorithm demonstrates the osteolytic lesion involving the left petrous apex and extending to the adjacent sphenoidal clivus.
 
Scintigraphy was also performed to rule out other bony lesions.
 
FDG-PET/CT only shows increased FDG uptake in the left petrous apex.
 
 
 
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