Temporal Arachnoid Cysts, EEG Findings and Seizure Types

Year 2005, Volume: 12 Issue: 3, 163 - 167, 01.06.2005

Handan Işın Özışık Ayhan Bölük Kaya Saraç Sibel Kızkın Cemal Özcan

Abstract

Aim: Arachnoid cysts are benign developmental anomalies. They are frequently located in the middle cranial fossa. Common clinical findings are cranial enlargement, hydrocephaly, headache, epileptic seizures, psychomotor retardation and aphasia. It is not known whether there is any correlation between intracranial AC and epileptic seizures. The aim of our study was to determine the association between temporal AC and epilepsy in epileptic patients with AC localized to the temporal region by evaluating the type of seizures, interictal EEG findings, any concurrent epileptogenic pathology and the response to medication. Material and Methods: Nine cases with AC of the temporal lobe were included in the study. The ages of the patients (2 females, 7 males) varied from 6 to 54 (mean age: 25.5 ±13.6) . Results: The arachnoid cyst was localized in the left temporal lobe in six patients, right temporal lobe in two patients and in both the right and left temporal lobes in one patient. The type of seizure was generalized tonic clonic (GTC) in six patients, simple partial progressing to generalized seizures in one patient, Juvenile Myoclonic Epilepsy (JME) in one patient and simple partial seizures with motor findings in one patient. The interictal EEG was normal in four patients. Two patients had generalized spike-wave activity, two patients with left temporal lobe AC had a right temporal focus and one patient showed epileptiform activity. Conclusion: The findings of our study supported the notion that the concurrence of AC and epilepsy was incidental and also failed to show an association between AC and a specific type of epilepsy. Key words: Temporal arachnoid cysts, EEG, epilepsy

Keywords

Temporal arachnoid cysts, EEG, epilepsy

Temporal Araknoid Kistler, EEG Bulguları Ve Nöbet Tipleri

Abstract

Araknoid kistler (AK) benign gelişimsel anomalilerdir ve sıklıkla orta kraniyal fossada yerleşirler. Oluşturdukları klinik bulgulardan en sık rastlanılanları, kraniyal genişleme, hidrosefali, başağrısı, epileptik nöbetler, psikomotor retardasyon ve afazidir. İntrakranial basınç artma bulguları ve/veya diğer nörolojik bulgulara yol açmamış olan intrakranial AK ile epileptik nöbetler arasında ilişki olup olmadığı bilinmemektedir. Çalışmamızın amacı, emporal bölgede yerleşmiş araknoid kisti olan epileptik hastalarda, nöbet tipi, interiktal elektroensefalografi bulguları, araknoid kistlerin olası epileptojenik potansiyelleri ve hastaların tedaviye yanıtları arasında ilişki olup olmadığını tanımlamaktı. Çalışmaya temporal bölgede araknoid kisti olan 6-54 yaşlar arasında (ortalama yaş 25.5±13.6) 9 olgu alındı. Araknoid kist lokalizasyonu altı hastada sol temporal, iki hastada sağ temporal ve bir hastada sağ ve sol temporal yerleşimliydi. Altı hastanın nöbeti GTK tip, biri jeneralize nobetlere ilerleyen basit parsiyel, biri JME ve biri de motor bulgulu basit parsiyel nöbetti. Dört hastada interiktal EEG normaldi. İki hastada jeneralize diken-dalga aktivitesi, sol temporal bölgede AK olan iki hastada sağ temporal odak ve bir hastada epileptiform aktivite vardı. Sekiz hasta monoterapi alırken iki taraflı temporal AK olan bir hasta politerapi alıyordu ve nöbetler tedaviye dirençliydi. Bulgularımız epilepsili olgularda araknoid kistin insidental olduğunu ve araknoid kist ile spesifik bir epilepsi tipi arasında ilişki olmadığını destekledi. Anahtar kelimeler: Temporal araknoid kistler, Epilepsi, Interiktal EEG bulguları

Keywords

Temporal araknoid kistler, Epilepsi, Interiktal EEG bulguları

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