Intracranial nonneoplastic cysts

Intracranial nonneoplastic cysts are common findings in magnetic resonance (MR) and computed tomographic (CT) brain scans.

A location-based approach is useful in establishing an appropriate diagnosis; some locations are virtually pathognomonic for certain lesions e.g. colloid cyst.

Many cysts may occur in more than one location (midline or off-midline) e.g. arachnoid and epidermoid cysts.

Features which help the diagnostic approach for intracranial cysts:

  • Is the cyst extra-axial or intra-axial cyst?
  • Is it supra- or infratentorial? 
  • If it is extra-axial, is it midline or off-midline?
  • If it is intra-axial, is it parenchymal or intraventricular?
Supratenorial
Midline
Off-midline
Infratentorial 
Midline
Off-midline (usually occurs in the cerebellopontine angle (CPA))
Intraventricular cysts
Supratentorial
Infratentorial
Intra-parenchymal
Supratentorial
Infratentorial
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Article Information

rID: 42016
Section: Approach
Tag: cases
Synonyms or Alternate Spellings:
  • Intracranial cysts
  • Benign intracranial cysts

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Cases and Figures

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    Rathke Cleft Cyst...
    Case 1: Rathke's cyst
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    Ruptured intracra...
    Case 2: dermoid cyst
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    Case 3: pineal cyst
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    Case 4: pineal cyst with apoplexy
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    Case 5: arachnoid cyst
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    Case 6: leptomeningeal cyst
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    Case 7: choroidal fissure cyst
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    FIESTA
    Case 8: arachnoid cyst cisterna magna
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    Case 9: epidermoid cyst CPA
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    Case 10: trapped ventricle
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    Distortion to the...
    Case 11: arachnoid cyst CPA
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    Case 12: colloid cyst
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    Case 13: choroid plexus cyst
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    Case 14: neuroglial cyst
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    Case 15: porencephalic cyst
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    Case 16: hippocampal sulcus remnant cysts
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    Case 17: TAC adjacent to meningioma
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