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@ARTICLE{Stock:147393,
author = {A. Stock and M. Mynarek and T. Pietsch and S. M.
Pfister$^*$ and S. C. Clifford and T. Goschzik and D. Sturm
and E. C. Schwalbe and D. Hicks and S. Rutkowski and B.
Bison and M. Pham and M. Warmuth-Metz},
title = {{I}maging {C}haracteristics of {W}ingless {P}athway
{S}ubgroup {M}edulloblastomas: {R}esults from the {G}erman
{HIT}/{SIOP}-{T}rial {C}ohort.},
journal = {American journal of neuroradiology},
volume = {40},
number = {11},
issn = {1936-959X},
address = {Oak Brook, Ill.},
publisher = {Soc.},
reportid = {DKFZ-2019-02510},
pages = {1811-1817},
year = {2019},
note = {40(11):1811-1817},
abstract = {In addition to the 4 histopathologically defined entities
of medulloblastoma, 4 distinct genetically defined subgroups
have been included in the World Health Organization
classification of 2016. The smallest subgroup is the
medulloblastoma with activated wingless pathway. The goal of
this study was to identify a typical MR imaging morphology
in a larger number of pediatric patients with wingless
pathway medulloblastoma.From January 2001 to October 2017,
of 75 patients with histologically confirmed and molecularly
subgrouped wingless pathway medulloblastomas recruited to
the German Pediatric Brain Tumor (HIT) trials, 38 patients
(median age, 12.8 ± 4.6 years at diagnosis; 24 $[63.2\%]$
female) had preoperative imaging that passed the entry
criteria for this study. Images were rated by the local
standardized imaging criteria of the National Reference
Center of Neuroradiology. Additionally, a modified
laterality score was used to determine tumor localization
and extension.Twenty-eight of 38 $(73.7\%)$ were primary
midline tumors but with a lateral tendency in $39.3\%.$ One
extensively eccentric midline tumor was rated by the
laterality score as in an off-midline position. Five tumors
were found in the cerebellopontine angle; 3, in the deep
white matter; and 2, in a cerebellar hemisphere.
Leptomeningeal dissemination was rare $(11.5\%).$ In
$60.5\%,$ intratumoral blood-degradation products were
found, and $26.3\%$ showed cysts with blood
contents.According to our observations, wingless pathway
medulloblastomas are not preferentially off-midline tumors
as postulated in previous studies with smaller wingless
pathway medulloblastoma cohorts. Dense intratumoral
blood-degradation products and cysts with blood contents are
frequently found and might help to differentiate wingless
pathway medulloblastoma from other medulloblastoma
subtypes.},
cin = {B062 / L101},
ddc = {610},
cid = {I:(DE-He78)B062-20160331 / I:(DE-He78)L101-20160331},
pnm = {312 - Functional and structural genomics (POF3-312)},
pid = {G:(DE-HGF)POF3-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31649159},
doi = {10.3174/ajnr.A6286},
url = {https://inrepo02.dkfz.de/record/147393},
}