Fig. 4.

Unsupervised cluster analysis of all 60 tumors by chromosome copy number status. All cases are scored according to copy number status (gain = green, black = balanced, red = loss) for all 38 autosomes (horizonatl axis). Each case is denoted according to the tumor type along the vertical axis (G glioma, M meningioma), the histological subtype of the tumor (A astrocytoma, E ependymoma, OA oligoastrocytoma, O oligodendroglioma, Ang angiomatous, M meningothelial, Psa psammomatous, T transitional, C chordoid, Ana anaplastic, Aty atypical, Pap papillary, TrP transitional/papillary, nd not determined) and the clinical grade of the tumor. The panel of cases grossly subdivides into meningiomas and gliomas, with those cases showing a grossly normal karyotype clustered in the center of the figure