[Spatial delimitation of low grade oligodendrogliomas]. / Délimitation spatiale des oligodendrogliomes de bas grade.
Neurochirurgie
; 51(3-4 Pt 2): 254-9, 2005 Sep.
Article
em Fr
| MEDLINE
| ID: mdl-16292169
ABSTRACT
Image-guided surgery is the central element of therapeutic management of low grade gliomas and consequently, a precise preoperative definition of their spatial extension is necessary. The question of the present work is do the imaging abnormalities delineate the real spatial development of low grade oligodendrogliomas? A review of the literature showed that MRI on T2-weighted and FLAIR sequences are used to delineate the spatial developement of these tumours and that spectroscopic magnetic resonance imaging is more sensible to appreciate it. Moreover, mathematical models and histological studies suggest that MRI does not indicate the actual spatial extension of low grade oligodendrogliomas. This study focused on histological analysis of biopsy samples performed outside MRI imaging abnormalities in patients who harboured a low grade oligodendroglioma. It showed that isolated tumour cells were identified beyond imaging abnormalities in all of the 17 patients studied. In 15 of those 17 patients, isolated tumour cells were identified in the most distant biopsy samples taken outside imaging abnormalities. Thus, conventional imaging findings, including MRI on T2-weighted and FLAIR sequences, are not able to provide the real spatial development and boundaries of low grade oligodendrogliomas.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oligodendroglioma
/
Neoplasias Encefálicas
/
Invasividade Neoplásica
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
Fr
Revista:
Neurochirurgie
Ano de publicação:
2005
Tipo de documento:
Article