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Pathologe. 2008 Nov;29(6):411-21. doi: 10.1007/s00292-008-1064-5.

[WHO classification of tumours of the CNS: revised edition of 2007 with critical comments on the typing und grading of common-type diffuse gliomas].

[Article in German]

Author information

  • 1Institut für Neuropathologie, Universitätsklinikum des Saarlandes, Gebäude 90.3, 66421, Homburg Saar, Deutschland.

Abstract

The fourth edition of the WHO classification of tumours of the CNS was published in 2007. Six new entities were codified: angiocentric glioma (AG); papillary glioneuronal tumour (PGNT); rosette-forming glioneuronal tumour of the fourth ventricle (RGNT); papillary tumour of the pineal region (PTPR); spindle cell oncocytoma of the adenohypophysis (SCO); and pituicytoma. Furthermore, six histological variants of well-known brain tumours have been added, partially because they show different biological behaviour and/or prognosis: pilomyxoid astrocytoma; atypical choroid plexus papilloma; medulloblastoma with extensive nodularity; anaplastic medulloblastoma; extraventricular neurocytoma; non-specific variant of dysembryoplastic neuroepithelial tumour (DNT). The new entities and variants are discussed in this review. Moreover, the typing und grading of common-type diffuse gliomas, as well as the WHO grading system, are critically reviewed, particularly with regard to the prognostically important differential diagnosis of diffuse astrocytomas und oligodendrogliomas.

PMID:
18820922
[PubMed - indexed for MEDLINE]
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