- Non-Neoplastic
- Exactly follows CSF signal: Enlarged perivascular space, encephalomalacia, porencephalic cyst, neuroglial cyst.
- Infection: Neurocysticercosis, abscess
- Resolving hematoma: May have peripheral enhancement in the subacute phase
- Multiple sclerosis
- Epidermoid/dermoid cyst
- Neoplastic
- Ganglioglioma: Well-circumscribed cystic lesion with nodule and minimal edema.
- DNET: Look for "bubbly" appearance on MRI
- Pleomorphic Xanthoastrocytoma: Look for a cortically based nodule
- Pilocytic astrocytoma: Well-circumscribed cystic lesion with nodule and minimal edema. Most commonly seen in children and in the cerebellum.
- Hemangioblastoma: Posterior fossa mass.
- Glioblastoma multiforme
- Metastases
- Cystic meningioma
- Ependymoma
Saturday, August 15, 2009
Cystic Brain Masses
Differential Diagnosis:
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