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Table 1: Overview of absolute and relative (%) frequencies of MR imaging features
Available Data No. %
Sex 38 
    Male 14 36.8
    Female 24 63.2
Histology 38 
    CMB 36 94.7
    AMB^{^a} 1 2.6
    LCMB^{^a} 1 2.6
Hydrocephalus 38 
    No 15 39.5
    Slight 6 15.8
    Moderate 15 39.5
    Severe 2 5.3
Enhancement 38 
    No 0 0
    Light 4 10.5
    Moderate 12 31.6
    Strong 22 57.9
Enhancing area 38 
    0%–25% 0 0
    26%–50% 1 2.6
    51%–75% 1 2.6
    76%–100% 36 94.7
T2-weighted images 37 
    Homogeneous 6 16.2
    Inhomogeneous 31 83.8
    Hyperintense 4 10.8
    Isointense 20 54.1
    Hypointense 13 35.1
T1-weighted images 36 
    Homogeneous 15 41.7
    Inhomogeneous 21 58.3
    Hyperintense 1 2.8
    Isointense 8 22.2
    Hypointense 27 75
Cysts 38 
    No 20 52.6
    As bright as the CSF 3 7.9
    Brighter than the CSF 5 13.2
    Blood-fluid level 10 26.3
Blood-degradation products on T1WI, T2WI or T2*/SWI 38 
    Yes 23 60.5
    No 15 39.5
Mass of iron contents on T2*/SWI 18 
    No 2 11.1
    <50% 11 61.1
    >50% 5 27.8
Dissemination 35 
    No 31 88.6
    M2 1 2.9
    M3 1 2.9
    M2 + 3 2 5.7
Note:—AMB indicates anaplastic medulloblastoma according to the WHO classification of 2007.
↵a According to the WHO classification of 2007.