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Isabelle M. Germano, Nicole Poulin, and André Olivier

S eizures recur after surgery for temporal lobe epilepsy in 20% to 60% of patients. 3, 5, 8, 12, 20 Although epilepsy surgery is practiced in an increasing number of centers, the indications for and the risks and outcome of reoperation for temporal lobe epilepsy have not been well documented. Reoperation for epilepsy was first reported in 1954 by Penfield and Jasper. 13 Several more recent series have demonstrated the benefit of reoperation for recurrent seizures, 14 including those of temporal lobe origin; 3, 12, 20 25% to 52% of patients were seizure

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Arteriovenous malformations of the medial temporal lobe

Surgical approach and neuroradiological characterization

Roberto C. Heros

T he terms “arteriovenous malformation (AVM) of the hippocampal area,” 10 “subtrigonal AVM,” 10 “anterior choroidal AVM,” 21, 27 “juxtapeduncular angioma,” 18 “juxtathalamic AVM,” 2 and “angioma of the external wall of the fissure of Bichat (hippocampal fissure)” 25 have been used to denote deep AVM's located primarily in the medial temporal lobe. The following cases illustrate the spectrum of these lesions. Case Reports Case 1 This 22-year-old right-handed man was referred to the Presbyterian-University Hospital in Pittsburgh after his fifth

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Selvadurai Sivalingam, Guy Corkill, William G. Ellis, and John R. Claiche

, Letterer-Siwe, and Hand-Schüller-Christian disease entity for treatment purposes is apparent. To our knowledge there has been no previously reported case of a solitary eosinophilic granuloma located in the temporal lobe; all previously reported cases have been localized in the hypothalamus and/or pituitary gland (Gagel's granuloma). 8 Extra-hypothalamic cerebral lesions histologically compatible with eosinophilic granuloma have been reported in the temporal lobe, but these have been autopsy studies and had documented multiple organ involvement. 3, 6 This report

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Daipayan Guha, Tim-Rasmus Kiehl, Timo Krings, and Taufik A. Valiante

reported only twice previously, both in young adults. 10 , 17 We present a case of a 51-year-old woman with a mesial temporal lobe schwannoma that presented as isolated TLE. The case is unique for its presentation with classic TLE in an older patient, as well as localization to the mesial temporal lobe without periventricular extension. Case Report History and Examination This 51-year-old right-handed woman presented to our neurosurgery clinic with a 4-year history of complex partial seizures. Her seizures lasted 20–30 seconds and consisted of a motor

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Richard S. C. Kerr, J. T. Hughes, Trudi Blamires, and Peter J. Teddy

right temporal lobe with some thickening of the dura in the region of the medial wall of the cavernous sinus ( Fig. 1 upper ). After injection of contrast material, CT demonstrated enhancement only in the wall of the cavernous sinus and along the edge of the tentorium ( Fig. 1 lower ). Fig. 1. Upper: Plain computerized tomography (CT) scans (8-mm slices) showing a widespread low-density area in the right-temporal lobe with some thickening of the dura along the edge of the cavernous sinus Lower: Contrast-enhanced CT scans (8-mm slices) showing minimal

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Andreu Gabarrós Canals, Ana Rodríguez-Hernández, William L. Young, Michael T. Lawton, and for the UCSF Brain AVM Study Project

T he temporal lobe houses important neurological functions. 17 Memory and learning are located in the hippocampus and parahippocampus; language reception is located in the Wernicke center in the dominant superior temporal gyrus; auditory reception resides in the Heschl gyrus; and visual signals are transmitted in the optic radiations. 8 , 17 , 19 The temporal lobe has an intimate relationship with the MCAs coursing through the sylvian fissure, with the PCAs coursing through the crural and ambient cisterns, and with the AChA supplying the choroid plexus

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Richard Leblanc, Donatella Tampieri, Yves Robitaille, André Olivier, Frederick Andermann, and Alan Sherwin

medically intractable temporal lobe epilepsy associated with an anterobasal temporal encephalocele herniating through the base of the greater sphenoid wing in the region of the foramen rotundum and pterygoid process. In these patients, epilepsy was successfully treated by anterior temporal resection and amygdalohippocampectomy including the encephalocele. One patient (Case 1) was included in a previous report 4 but is described here in greater detail, and two new cases with identical biological, clinical, and pathological features delineating a clinicopathological entity

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Ross P. Carne, Terence J. O'Brien, Christine J. Kilpatrick, Lachlan R. MacGregor, Rodney J. Hicks, Michael A. Murphy, Stephen C. Bowden, Andrew H. Kaye, and Mark J. Cook

We were interested to read the article by Cohen-Gadol AA, et al. (Cohen-Gadol AA, Bradley C, Williamson A, et al: Normal magnetic resonance imaging and medial temporal lobe epilepsy: the clinical syndrome of paradoxical temporal lobe epilepsy. J Neurosurg 102: 902–909, May, 2005). We draw the attention of the authors to the recent study published by our group1 in which a similar group of patients with nonlesional temporal lobe epilepsy was reported. Characteristics of patients in this group included electroclinically well-lateralized temporal lobe seizures

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Neurosurgical Forum: Letters to the Editor To The Editor Ivan G. Ainyette , Ph.D. Paola Bowers , M.D. Olubansile Mimiko , M.D. Masum Ahmed , M.D. Marioara Lazar , M.D. Hilda Llinguin , P.A.C. Harlem Hospital Center New York, New York 372 373 Abstract It has been widely accepted that the right temporal lobe plays a major role in the processing of music. One of the main lines of evidence was derived from Milner's study, published

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Dale Ding, Mark Quigg, Robert M. Starke, Zhiyuan Xu, Chun-Po Yen, Colin J. Przybylowski, Blair K. Dodson, and Jason P. Sheehan

T reatment of temporal lobe arteriovenous malformations (AVMs) carries burdens beyond the primary consideration of prevention of hemorrhage. Prior studies of AVM-associated epilepsy have shown that higher rates of epilepsy are associated with temporal lobe involvement. 20 , 23 , 24 , 48 Interventional therapy has the potential to control AVM-associated epilepsy. 2 , 23 Since posttreatment epilepsy status has a strong influence on quality of life and functional outcomes, treatment-induced seizure control is an important consideration. 25 Thus, the