Patient | MRI findings | Interictal scalp EEG | Ictal scalp EEG | Interictal SEEG | Ictal SEEG | Ictal SPECT | Time and type of cortectomy | Pathology |
1 | Normal | Normal | Onset : L temporal | Slow waves and spikes in L amygdala, L post hippocampus and Ltemporal pole | Onset in L amygdala, L post hippocampus and temporal pole. Late invasion of frontal lobe with sharp waves | L temporal and orbito frontal hyperperfusion surrounded by hypoperfusion | March 96; L temporal lobectomy including pole | Mesial temporal sclerosis |
2 | R Hippocampal atrophy | R Temporal sharp and slow waves | Onset : R temporal | ND | ND | R temporal hyperperfusion surrounded by hypoperfusion | January 98; R temporal lobectomy including pole | Mild neuronal loss |
3 | Hyperintense L amygdala on T2 weighted images | L Temporal sharp waves | Onset : L temporal | Slow waves and spikes on L temporal lobe, internal as external, as well as on the internal frontopolar region | Onset on L amygdala, or hippocampus. Early implication of frontopolar and anterior cingulate regions | ND | September 96; L temporal lobectomy including the anterior part of temporal superior gyrus | Moderate mesial temporal sclerosis |
4 | R Anterior cingulate lesion (dysplasia?) | Normal | Onset : R prefrontal? (artifacts) | Spikes in R anterior cingulate region spreading to internal and orbito-frontal regions and to temporal inferior cortex | Onset in R anterior cingulate region spreading to internal and orbito-frontal regions and to temporal inferior cortex | R frontal anteromesial surrounded by hypoperfusion | November 98: R internal frontal and orbital cortectomy | Focal cortical dysplasia |
5 | Normal | R Temporal slow waves | Onset : R temporofrontal | Slow waves and spikes on R amygdala and hippocampus | Onset on amygdala, associated with fear. No implication of frontal lobe | R temporal hyperpefusion surrounded by hypoperfusion | November 93; R temporal lobectomy including pole | Mesial temporal sclerosis |
6 | Arachnoidal cyst. Hyperintense L temporal pole on T2 weighted images | Rare L post-temporal sharp waves | Onset : L temporal | ND | ND | L temporal hyperperfusion surrounded by hypoperfusion | April 96; L temporal lobectomy | Mesial temporal sclerosis |
7 | Bilateral temporal arachnoidal cyst R>L | R Temporal sharp waves | Onset : R temporal | ND | ND | ND | ND | ND |
8 | Normal | Normal | Onset : R temporal | ND | ND | ND | ND | ND |
R=right; L=left; ND=not done.