Perfusion-weighted imaging is a feasible method of reducing the sampling error in the histopathological diagnosis of a presumed LGG, particularly by improving the selection of targets for stereotactic biopsy.
INTRODUCTION: In this study the authors review the outcomes of 22 patients with medically refractory epilepsy and slow growth brain tumors. OBJECTIVES: Evaluate the clinical, electrophysiological, operative, and histopathological features. PATIENTS AND RESULTS: The majority of the tumors were located in the temporal lobe (n = 20) and involved the cortical gray matter. The most frequent tumors were gangliogliomas (n = 9), astrocytomas grade I and II (n = 6), dysembryoplastic neuroepithelial tumors (n = 5) and ganglioneuroma (n = 2). The biological behavior of the tumors was strikingly indolent, as indicated by a long preoperative history of chronic seizures (mean, 14 years). Mean follow-up time after resection was 27 months, and according to Engel’s classification, 85% were seizure-free, 10% showed a reduction of seizure frequency of at least 90%, and 5% had reduction in seizure frequency at least 75%. CONCLUSION: The data indicate that neoplasms associated with pharmacoresistent epilepsy constitute a distinct clinicopathological group of tumors that arise in young patients, involve the cortex, and exhibit indolent biological behavior for many years. Complete surgical removal of these tumors, including the epileptogenic area, can achieve excellent seizure control.
Introdução: As metástases cerebrais formam o grupo de neoplasias mais freqüente do sistema nervoso central, e cerca de 40% dos pacientes com câncer desenvolvem metástases cerebrais. Pacientes com metástases únicas ou cujo quadro neurológico pode ser atribuído à lesão se beneficiam do tratamento cirúrgico. A evolução e o tratamento desta doença ainda permanecem controversos. Objetivos: Descrever as características clínicas e epidemiológicas dos pacientes com metástases cerebrais ressecadas no período de 2002 a 2003 no Hospital São Paulo. Métodos: Trabalho retrospectivo, descritivo, analítico, com coleta de dados baseada em revisão de prontuários de pacientes submetidos a ressecção cirúrgica de neoplasia secundária cerebral. Buscou-se a caracterização da população de estudo. Resultados: 30 pacientes foram avaliados (16 do sexo feminino). A média das idades dos pacientes foi de 52,9 ± 11,7 anos. As metástases de pulmão e mama compreenderam a maioria dos tumores operados. Houve desde então 12 óbitos registrados até a coleta de dados, com média de sobrevida pós-operatória de 72,92 dias, sendo o pior prognóstico relacionado às metástases de melanoma. Conclusão: As metástases cerebrais constituem ainda um grupo de doenças com prognóstico reservado, acometendo adultos economicamente ativos. Os pacientes com metástases de tumores de mama apresentaram tendência a maior sobrevida. A comparação de dados de diferentes centros é essencial para estabelecer a melhor conduta no tratamento destes casos.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.