The 4th edition of WHO classification of CNS tumors
introduced important changes in the classification of the tumors of central
nervous system, compared with WHO classification 2000. Ten New entities
and variants were described; three of them conc
erned gliomas. Changes in
the grading of 7 of these tumors were introduced; two of them concerned
gliomas.
This study aim reclassify and to compare two series of
gliomas, observed in the Syrian and French populations.
