PMC4780067_01
(a) MR scan of patient before operation. (b) Immunohistochemical INI1 staining of the tumour tissue. Staining for INI1 was negative in the tumour cells but positive in endothelial and inflammatory cells.
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fig1
MRI of the head showed a 9 x 8 x 8 cm supratentorial tumour on the left side (Figure 1(a)). INI1 was negative in the tumour cells but positive in endothelial and inflammatory cells (Figure 1(b)). Most cells were negative for S-100 and PGR, CD34, Desmin, IDH1, and NeuN. IHC for p21 and p53 showed similar number of stained nuclei, indicating no probable p53 mutation.