Case of the Week
Section Editors: Matylda Machnowska1 and Anvita Pauranik2
1University of Toronto, Toronto, Ontario, Canada
2BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
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November 12, 2015
Dilated Perivascular Space of the Anterior Superior Temporal Lobe
- Background: Commonly recognized lesion in other parts of the brain. Typically follows CSF signal without surrounding FLAIR or T2 signal change.
- Clinical Presentation: Usually, incidental findings unrelated to patient symptoms
- Key Diagnostic Features:
- Nonenhancing cystic lesion that follows CSF on all sequences, often having a prominent amount of surrounding white matter T2 hyperintensity
- Located subcortically at the base of anterior aspect of superior temporal gyrus
- DDx:
- Low-grade tumor
- Lacunar infarct
- Treatment: It is important to recognize this characteristic benign entity in order to prevent unnecessary patient anxiety or surgical intervention.
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