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. 2018 Nov 13;9(89):35974–35982. doi: 10.18632/oncotarget.26313

Table 1. Summarization of radiological and histopathological data of patients with primary diagnosed and recurrent meningioma.

Variable Available data (N, n%) Frequency (N, n%)
Tumour location 617 (100%)
 Convexity 215 (35%)
 Falx/parasagittal 85 (14%)
 Skull base 271 (44%)
 Posterior fossa 41 (7%)
 Intraventricular 5 (1%)
Tumour/edema volume
 Tumour volume (median, range) 554 (90%) 12.71 ccm (0.02-356.94 ccm)
 Edema volume (median, range) 529 (86%) 0.00 ccm (0.00-739.28 ccm)
Intensity on T2-weighted MRI 540 (88%)
 Hypointense 294 (48%)
 Isointense 19 (3%)
 Hyperintense 227 (37%)
Further radiological criteria
 Archnoid layer disrupted/absent 531 (86%) 296 (48%)
 Heterogeneous T1 contrast enhancement 617 (100%) 262 (43%)
 Tumour shape irregular 558 (90%) 225 (37%)
 Tumour calcifications 554 (88%) 115 (19%)
 Capsular contrast enhancement 523 (85%) 160 (26%)
WHO Grade 617 (100%)
 WHO grade I 557 (90%)
 WHO grade II 57 (9%)
 WHO grade III 3 (1%)
Brain invasion 617 (100%)
 Present 24 (4%)

The left column delineates the rate of available data, the right column shows the frequency of the corresponding variable and the median/range of the tumour and PTBE volumes.