IV.06 Ependymoblastoma

PIV06a1 - Click here to make me bigger
PIV.06.a1 Ependymoblastoma (MT x100). Rare brain tumour of young children. Several ependymoblastic rosettes composed of several cell layers around a small cavity. The apical surface of the internal cell layer forms a limiting membrane that is thickened by the accumulation of blepharoplasts. The numerous other cellular elements are poorly differentiated. The nuclei are rich in chromatin and the mitotic index is elevated.