Hostname: page-component-745bb68f8f-kw2vx Total loading time: 0 Render date: 2025-02-02T13:01:26.479Z Has data issue: false hasContentIssue false
  • English
  • Français

Surgery for Central, Parietal and Occipital Epilepsy

Published online by Cambridge University Press:  18 September 2015

Theodore Rasmussen
Theodore Rasmussen*
Affiliation:
Montreal Neurological Institute and Hospital, Montreal
*
3801 University Street, Montreal, Quebec, Canada H3A 2B4
Rights & Permissions [Opens in a new window]

Abstract:

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Patients with epileptogenic lesions that are more or less restricted to the central, parietal or occipital regions represent 14% of our total epilepsy surgery series and consisted of 322 patients at the end of 1980. Tumoral or major vascular lesions were present in 117 patients (37%), but this report is limited to the remaining 203 patients (63%) with non-tumoral epileptogenic lesions. The presumed etiology was birth trauma or anoxia in 25%, postnatal brain trauma in 25%, and unknown in 24%, miscellaneous lesions were present in 16%, post-inflammatory gliosis or multiple factors were present in the remaining 10%. Follow-up data of 2-51 years' duration (median 18 years) are available for 186 of these 203 patients. Sixty-three patients (34%) remain seizure-free. Forty-two patients (23%) have a marked reduction of seizures. The remaining 81 patients (44%) have a lesser reduction. The variation in clinical seizure patterns is considerably greater than in temporal lobe epilepsy. Focal sensorimotor phenomena are common at the onset, whether the seizures begin in the central region or further posterior. The success following cortical resection is equally gratifying and the failures just as distressing as in surgery for epilepsy involving other brain regions.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 18 , Issue S4 , November 1991 , pp. 611 - 616
Copyright
Copyright © Canadian Neurological Sciences Federation 1991

References

REFERENCES

1.Rasmussen, T, Blundell, J. Epilepsy and brain tumor. In: Fisher, RG, ed. Clinical Neurosurgery. Baltimore: Williams & Wilkins 1961; 138–156.Google Scholar
2.Leblanc, F, Rasmussen, T. Cerebral seizures and brain tumors. In: Vinken, PJ, Bruyn, GW, eds. Handbook of Clinical Neurology Vol. 15. Amsterdam: North Holland Publishing Co. 1974; 295–301.Google Scholar
3.Rasmussen, T. Surgery for epilepsy associated with brain tumors. In: Purpura, DP, Penry, JK, Walter, RD, eds. Neurosurgical Management of the Epilepsies, New York: Raven Press 1975; 227–239.Google Scholar
4.Rasmussen, T. Cortical resection for medically refractory epilepsy: results, lessons and questions. In: Rasmussen, T, Marino, R, eds. Functional Neurosurgery. New York: Raven Press 1979; 253–269.Google Scholar
5.Rasmussen, T. Surgery for epilepsy arising in regions other than the temporal and frontal lobes. In: Purpura, DP, Penry, JK, Walter, RD, eds. Neurosurgical Management of the Epilepsies. New York: Raven Press 1975; 207–226.Google Scholar
6.Rasmussen, T, Milner, B. Clinical and surgical studies of the cerebral speech areas in man. In: Zulch, KJ, Creutzfeldt, , Galbraith, GC, eds. Cerebral Localization. Berlin Heidelberg. Springer-Verlag 1975; 235–257.Google Scholar
7.Tükel, K, Jasper, H. The electroencephalogram in parasaggital lesions. Electroencephal Clin Neurophysiol 1952; 4: 513–526.CrossRefGoogle Scholar
8.Rasmussen, T. Focal epilepsies of non-temporal and non–frontal origin. In: Weiser, HG, Elger, CE, eds. Presurgical Evaluation of Epilepsies. Berlin Heidelberg. Springer-Verlag 1987; 300–305.CrossRefGoogle Scholar
9.Rasmussen, T, Milner, B. The role of early left-brain injury in determining lateralization of cerebral speech functions. Ann Acad Sci 1977; 299: 355–369.CrossRefGoogle ScholarPubMed