Tumores neuroepiteliales disembrioplásicos

Villarejo, F.; Alvarez-Sastre, C; Jv, Martínez-Quiñones; Colomar, P; Ap, Martín-Gamero; Pérez-Díaz, C

doi:10.33588/rn.2909.98940

Cited by 4 publications

(1 citation statement)

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“…2 The identification of these tumours is of particular importance, with therapeutic and prognostic implications, due to their benign behaviour and tendency to mimic more aggressive tumours, such as oligoastrocytomas. 3 DNETs and GGs, together with gangliocytomas, have been included in Barkovich's classification of malformations of cortical development, as malformations due to abnormal neoplastic neuronal and glial proliferation with abnormal cell types, associated with disordered cerebral cortex. 4 Epilepsy is usually the main manifestation of developmental tumours and, in most cases, the presenting feature.…”

Section: Introductionmentioning

confidence: 99%

Epilepsy surgery in children with developmental tumours

García-Fernández

Castillo

Ugalde-Canitrot

et al. 2011

Seizure

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We report our experience regarding evaluation, surgical treatment and outcomes in a population of 21 children with histopathologically confirmed developmental tumours [nine dysembryoplastic neuroepithelial tumours (DNET), ten gangliogliomas (GG) and two gangliocytomas (GC)] and related epilepsy, analyzing video-EEG, MRI and neuropsychological data, before and after surgery. Most children had focal epilepsy correlating well with lesion location. One patient had epileptic spasms and generalized discharges. Tumours were located in the temporal lobe in 13 patients. Mean age at surgery was 11.16 years. Postsurgical MRI showed residual tumour growth in one DNET. One child had a recurrent ganglioglioma with anaplastic transformation. At latest follow-up (mean 4.68 years) 95.2% of patients were seizure-free and no significant neuropsychological declines were observed. Evidence from our study suggests that, in this setting, surgery should be performed before criteria for refractory epilepsy are met, particularly in cases with early seizure onset, in order to optimize cognitive outcome.

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Section: Introductionmentioning

confidence: 99%

Epilepsy surgery in children with developmental tumours

García-Fernández

Castillo

Ugalde-Canitrot

et al. 2011

Seizure

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MRI-characteristics of epileptogenic supratentorial brain tumors in children

Khalilov¹,

Холин²,

Medvedeva³

et al. 2016

Z. nevrol. psikhiatr. im. S.S. Korsakova

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Цель исследования -анализ результатов магнитно-резонансной томографии (МРТ) у пациентов с симптоматической эпилепсией, ассоциированной с опухолью. Материал и методы. Были проанализированы данные МРТ 52 пациентов с симптоматической эпилепсией, проходивших лечение по поводу опухолей супратенториальной локализации. Были выявлены наиболее эпилептогенные опухоли. Особое внимание было уделено опухолям со стертой клинической картиной и не имевшим типичных МРТ-признаков. Все пациенты с опухолями были прооперированы с применением различных методик хирургического вмешательства. Результаты. Наиболее эпилептогенными опухолями оказались дизэмбриопластические нейроэпителиальные опухоли (ДНЭО), диффузные астроцитомы (ДА) и ганглиоглиомы (ГГ). Во всех случаях ДНЭО и у 4 пациентов с ГГ эпилептические приступы являлись дебютным, а в 4 из 5 случаев ДНЭО -единственным клиническим признаком наличия опухоли. При МРТ в случаях ДНЭО, ДА и ГГ выявлялись изо/ гипоинтенсивный сигнал на Т1-ВИ и варьирующий по интенсивности от умеренного до гиперинтенсивного сигнала на Т2-и FLAIR-ВИ, при этом в случаях с ДНЭО и ГГ практически отсутствовали масс-эффект и перифокальный отек, а на FLAIR-ВИ наиболее четко прослеживалась так называемая пеноподобная (мультикистозная) структура. Не отмечено существенного изменения размеров ДНЭО и ГГ. В 1 случае отмечено сочетание ДНЭО с корковой дисплазией. При ДА трудно отличить перифокальный отек от туморозной ткани и неизмененных тканей головного мозга, и, как правило, рост опухоли замедлен. Заключение. Эпилептогенные опухоли могут копировать рентгенологические характеристики друг друга, а также мимикрировать ганглиоглиомы, олигодендроглиомы и астроцитомы Gr I, II и др. Они являются наиболее частыми причинами возникновения симптоматической фокальной эпилепсии. Эти образования необходимо в первую очередь исключать в случаях фармакорезистентной эпилепсии. Ключевые слова: опухоли головного мозга у детей, симптоматическая фокальная эпилепсия, эпилептическая хирургия, нейровизуализация.Objective -to analyze MR-images in patients with symptomatic epilepsy associated with the brain tumor. Material and methods. MRI results of 52 patients with symptomatic epilepsy operated for tumors of supratentorial localization were analyzed. The most epileptogenic tumors with atypical MRI signs and subtle clinical presentation were identified. All patients with tumors were operated using different methods of surgical intervention. Results. Dysembryoplastic neuroepithelial tumors (DNET), diffuse astrocytomas (DA) and gangliogliomas (GG) were the most frequent epileptogenic tumors. In all the cases of DNET and in 4 patients with GG, epileptic seizures were the first, and in 4 of 5 cases of DIO were the only clinical sign of tumor presence. In DNET, DA and GG, there was an iso-or hypointensive signal on T1 WI and a signal varying in intensity from moderate to hyperintense in T2 and FLAIR WI, while in cases with DNET and GG, no mass effect and perifocal edema was practically seen. The so-called «spume-like» (multicystic) structure was m...

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Treatment of epilepsy in children with brain tumors

Холин

Khalilov

Vasiliev

et al. 2016

Z. nevrol. psikhiatr. im. S.S. Korsakova

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The outcomes on the Engel scale were as follows: in 27 patients with surgical intervention without ECoG: class I - 9 patients, class II - 7 patients, class III - 5 patients, class IV - 6 patients and in 25 patients operated with ECoG: class I - 19 patients, class II - 4 patients and class III - 2 patients. The significant difference (p<0.01) between I+II Engel classes in comparison with III+IV Engel classes in operated patients demonstrated the necessity of ECoG during surgery in the resection of supratentorial brain tumors in patients with symptomatic epilepsy.

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Tumores neuroepiteliales disembrioplásicos

Cited by 4 publications

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Epilepsy surgery in children with developmental tumours

Epilepsy surgery in children with developmental tumours

MRI-characteristics of epileptogenic supratentorial brain tumors in children

Treatment of epilepsy in children with brain tumors

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