M Koziak

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This second part of our study of 'pure' oligodendrogliomas focuses on survival data analysis. In order to identify potentially useful prognostic factors and to assess the effectiveness of a new grading system, the 79 patients in the previously analyzed series for whom adequate follow-up could be obtained (52%) were entered in the present analysis.(More)
PURPOSE Definition of homogeneous tumor groups of oligodendrogliomas or oligo-astrocytomas is a basic condition for an adequate evaluation and comparison of the results of treatments in patients from various institutions. However, increasing discordances are observed in the histological diagnosis of these tumors. The main goal of this study is to assess(More)
Microangiogenesis is a delayed but crucial event in the malignant progression of oligodendrogliomas. Accord-ingly, in the new Sainte-Anne grading system of oligodendrogliomas, endothelial hyperplasia and contrast enhancement, both being indicators of microangiogenesis, are key criteria for the distinction of grade A from grade B tumours. Vascular(More)
INTRODUCTION Incidence of cerebral oligodendrogliomas is increasing because of better recognition made possible by improved classifications. We studied a homogeneous series using the Sainte-Anne grading scale in order to better understanding the history of these tumors with or without treatment and to assess prognosis and associated factors. PATIENTS AND(More)
The story of the classifications for gliomas is related to the development of the techniques used for cytological and histological examination of brain parenchyma. After a review of these techniques and the progressive discovery of the central nervous system cell types, the main classifications are presented. The first classification is due to Bailey and(More)
PURPOSE To investigate optic neuropathies, with normal results in fluorescein fundus angiography, by axial and paraaxial fluorophotometry (a type of topographic vitreous fluorophotometry) in order to determine differences examined in the amount of fluorescein leakage in macular and optic disc. MATERIAL AND METHODS We studied 12 eyes with unilateral(More)
A 28-year-old woman developed late post-partum eclampsia. CT scan showed focal cortical hypodensities and diffuse and bilateral hypodensity of the hemispheric white matter. These lesions were hypointense on T1-weighted sequences and hyperintense on T2-weighted sequences. The CT and MRI abnormalities resolved completely within a few weeks. These changes are(More)
In this fluorophotometric study, in 25 eyes with middle advanced stages of glaucoma simplex (visual field defects ranged from 500 dB to 800 dB) and treated with topical antiglaucomatous agents, the posterior vitreous penetration ratio (PVPR) was compared with that from normal subjects. Vitreous fluorophotometry (Fluorotron Master, Coherent) was used to(More)
The analysis of clinical features of groups of patients with frequent and rare epileptic seizures showed that the mean age of the first seizure, the mean age at the time of examination, and the mean duration of the disease were not significantly different in both studied groups. In the group with frequent seizures a significantly more frequent presence of(More)