Журнал клинической и экспериментальной патологии

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Chordoid Glioma of the Third Ventricle with High Mib-1 Index: A Case Report

Serdar Altınay, Aydın Sav, Koray Özduman and Türker Kılıç

Chordoid glioma is a slowly growing and uncommon neoplasm which involves the third ventricle and is commonly seen in middle age woman. It is a novel entity which was just recently been incorporated to the World Health Organization (WHO) pathological central nervous system (CNS) tumor classification with chordoma like histologic features and glial fibrillary acidic protein immunoreactivity. Hereby we report a case of third ventricular chordoid glioma in a 32 year old man with history of headache and visual disturbances. Magnetic Resonance Imaging (MRI) imaging showed a homogeneously enhancing mass occupying in the third ventricle. The lesion underwent a subcapsular removal through craniotomy. Histologically the tumor had a uniform appearance consisting of clusters and cords of epithelioid cells embedded within a mucinous stroma, containing a lymphoplasmacytic infiltrate. Immunohistochemistry revealed diffuse expression of Glial Fibrillary Acidic Protein (GFAP), vimentin, cytokeratin and S-100 protein reactivity. An uncommonly high MIB-1 index of 10% was detected. There was no nuclear accumulation of p53 protein. Our patient, who rejected radiotherapy and chemotherapy options after surgery (at 52 months), is currently disease-free