case_images: PMC5223751_01
case_images: Atypical menigeoma (Haematoxylin-Eosin [HE] stain).
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case_images: The histological examination including immunohistochemical profile showed an atypical meningioma WHO II  (Fig. 1, 2).
case_images: Mib1-stain.
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case_images: The histological examination including immunohistochemical profile showed an atypical meningioma WHO II  (Fig. 1, 2).
case_images: A : T1-weighted axial MR image after contrast administration showing the tumor before the last operation. B : T2-weighted sagittal MR image showing the tumor before the last operation. MR : magnetic resonance.
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case_images: After three years (2008) a recurrence of the tumor in the posterior horn of the left lateral ventricle was discovered on MRI Scans (Fig. 3A, B) at the same location as the tumor before (2002).
case_images: A : T1 weighted axial MR image after contrast administration showing the tumor in the quadrigeminal lamina. B : T1 weighted sagittal MR image after contrast administration showing the tumor in the quadrigeminal lamina. MR : magnetic resonance.
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case_images: Additionally, in this MRI another tumor located in the quadrigeminal lamina was detected (Fig. 4A, B).
case_images: Cavernoma. EVG stain. EVG : Elastica-van-Gieson.
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case_images: The pathological examination including immunohistochemical studies confirmed the diagnosis of a collision tumor consisting of components of a meningioma WHO II  and a cavernoma (Fig. 5).
case_images: EMA stain. EMA : epithelial membrane antigen.
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case_images: The tumor cells stained positively for the epithelial membrane antigene (EMA) (Fig. 6) and the evidence of cavernoma components was shown by positive expression of CD-34 of the epithelial cells (Fig. 7).
case_images: A : T1 weighted axial MR image after contrast administration after tumor extirpation. B : T1 weighted axial MR image after contrast administration, three year follow up. MR : magnetic resonance.
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