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Neurology (Expert Forum)
EPILEPSY / CORTICAL DYSPLASIA QUERY
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EPILEPSY / CORTICAL DYSPLASIA QUERY
by Upendra-Patel, Oct 14, 1998 12:00AM
My son's long disabilitating medical condition has still not been diagnosed.
His appointment with neurologist is some time away and would appreciate any
opinion in respect of epilepsy and/or cortical dysphasia based on the following
MRI and spect results.
The MRI conclusion done in January 98 is " there is a right anterior choroidal
fissure CSF containing cyst which has the typical features of an archnoid cyst.
This distorts the hippocampus, but there is no signal change within the hippocampal
formation. There are appearances in keeping with cortical dysplasia involving
the right superior and to a lesser extent the middle temporal gyrae. If the
patient's EEG localises the abnormality to the right temporal region, the cortical
dysplasia is most likely to be responsible for the seizure disorder. "
A Cerebral Perfusion Study in May 98 using Tc-99 exametazime interpretation is "
the focal area of reduced perfusion to the right anterior parietal cortex has no
MRI correlate and is unexplained, but can be seen in patients with a previous
history of head trauma. Mild asymmetry of perfusion between the temporal lobes may
reflect pyhsiologic side to side variation, although alteration in temporal lobe blood
flow can be seen with temporal lobe epilepsy. Ictal and interictal imaging would be
necessary to further evaluate this possibility. ''
An ICTAL study was done in September 98. " The patient was injected with technetium
99m HMPAO during an acute ictal episode and SPECT imaging performed 1 hour later. There
is relative hypoperfusion noted of the left parietal occipital and temporal lobes, with
hyperperfusion noted particularly in the region of the right temporal lobe extending
posteriorly. Impression: In the setting of an ictal study, the overall findings are
suggestive of a right temporal focus and correlation with an inter-ictal study and recently
performed MRI would be of use. "
I would appreciate any information on the implication of these results or any other helpful
advice.
Thanking you,
UPI
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See answer
