EURORAD ESR

Case 13624

Intracranial epidermoid cyst

Author(s)
Samar Hamid1, Sarwanand Khetpal

Department of Radiology,
Jinnah Postgraduate Medical Center
Karachi, Pakistan.
 
Patient
female, 35 year(s)
 
 
  • Figure 1
    Axial T1W image

    A large infratentorial midline abnormal signal intensity area appearing hypointense on T1W sequence showing typical "dirty CSF" appearance.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
  • Figure 2
    Axial T2W image

    A well-defined midline abnormal signal intensity area appearing hyperintense on T2W sequence.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
  • Figure 3
    Coronal Flair Image

    A large midline abnormal signal intensity area partial suppression on Flair sequence giving "dirty CSF" appearance.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
  • Figure 4
    Diffusion-weighted image

    Hyperintense signals representing diffusion restriction.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
  • Figure 5
    Apparent diffusion coefficient

    Hypointense signals on ADC mapping representing diffusion restriction.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
  • Figure 6
    Axial T1W post-contrast image

    No enhancement on post-Gadolinium sequences.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
  • Figure 7
    Hydrocephalus
     

    Prominent bilateral lateral ventricles and moderately dilated 3rd ventricle

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;

    Dilated lateral ventricle

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
  • Figure 8
    Sagittal T1W Postcontrast Image

    Indentation over the brainstem and upper cervical cord resulting in their anterior displacement (arrows)

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Imaging sequences; Special Focus: Cysts;
     
     
A large infratentorial midline abnormal signal intensity area appearing hypointense on T1W sequence showing typical "dirty CSF" appearance.
 
A well-defined midline abnormal signal intensity area appearing hyperintense on T2W sequence.
 
A large midline abnormal signal intensity area partial suppression on Flair sequence giving "dirty CSF" appearance.
 
Hyperintense signals representing diffusion restriction.
 
Hypointense signals on ADC mapping representing diffusion restriction.
 
No enhancement on post-Gadolinium sequences.
 
Prominent bilateral lateral ventricles and moderately dilated 3rd ventricle
 
Dilated lateral ventricle
 
Indentation over the brainstem and upper cervical cord resulting in their anterior displacement (arrows)
 
 
 
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