TY  - JOUR
AU  - Sahm, Felix
AU  - Reuss, D. E.
AU  - Giannini, C.
TI  - WHO 2016 classification: changes and advancements in the diagnosis of miscellaneous primary CNS tumours.
JO  - Neuropathology & applied neurobiology
VL  - 44
IS  - 2
SN  - 0305-1846
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - DKFZ-2019-00745
SP  - 163 - 171
PY  - 2018
AB  - This short review highlights significant changes and recent findings incorporated to varying extent in the WHO 2016 definition of a variety of tumours, including peripheral nerve sheath tumours, meningiomas, mesenchymal nonmeningothelial tumours, melanocytic tumours, lymphomas and histiocytic tumours, germ cell tumours and non-neuroendocrine pituitary tumours. Most notable classification changes include: adding hybrid nerve sheath tumours to the spectrum of benign nerve sheath tumours; an updated definition of atypical meningioma (WHO grade II), including cases with brain invasion; recognizing dural solitary fibrous tumour (SFT) and haemangiopericytoma (HPC) as a single tumour entity characterized by NAB2 and STAT6 gene fusions for which the term SFT/HPC was chosen; recognizing that pituitary granular cell tumour, spindle cell oncocytoma, and pituicytoma all share nuclear expression of TTF-1, possibly representing a spectrum of a single nosological entity derived from posterior pituitary glial cells. The most significant diagnostic markers which have emerged include: inactivation of NF1, CDKN2A, and PRC2 components, SUZ12 and EED in MPNST, leading to neurofibromin and H3K27me3 expression loss; GNAQ and GNA11 mutations in CNS primary melanocytic tumours; BRAFV600E mutation in histiocytic tumours (Langerhans cell histiocytosis and Erdheim-Chester disease) and papillary craniopharyngioma, which provides both a diagnostic marker in the appropriate pathological setting and a therapeutic target. The WHO 2016 Classification has balanced cutting-edge knowledge on the molecular characteristics of the miscellaneous CNS tumours reviewed here with a practical approach for their daily diagnostic work-up. Much more progress can be expected in the classification of these neoplasms in the near future.
LB  - PUB:(DE-HGF)16
C6  - pmid:28295484
DO  - DOI:10.1111/nan.12397
UR  - https://inrepo02.dkfz.de/record/143136
ER  -