Abstract
Clinical data and MRI findings are presented on 18 subjects from two families with neuropathologically confirmed CADA-SIL. DNA analysis revealed mutations in exon 4 of Notch 3 gene in both families. All family members with mutations in Notch 3 gene had extensive abnormalities on MRI, principally lesions in the white matter of the frontal lobes and in the external capsules. Of several family members in whom a diagnosis of CADASIL was suspected on the basis of minor symptoms, one had MRI changes consistent with CADASIL; none of these cases carried a mutation in the Notch 3 gene. MRI and clinical features that may alert the radiologist to the diagnosis of CADASIL are reviewed. However, a wide differential diagnosis exists for the MRI appearances of CADASIL, including multiple sclerosis and small-vessel disease secondary to hypertension. The definitive diagnosis cannot be made on MRI alone and requires additional evidence, where available, from a positive family history and by screening DNA for mutations of Notch 3 gene.
Original language | English |
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Pages (from-to) | 249-255 |
Number of pages | 7 |
Journal | Neuroradiology |
Volume | 42 |
Publication status | Published - 2000 |
Keywords
- cerebral autosomal dominant arteriopathy magnetic resonance imaging
- AUTOSOMAL-DOMINANT ARTERIOPATHY
- MULTI-INFARCT DEMENTIA
- SURAL NERVE BIOPSY
- SUBCORTICAL INFARCTS
- LEUKOENCEPHALOPATHY CADASIL
- SPECTRUM
- MIGRAINE
- LESIONS
- STROKE
- MUSCLE