Pineal parenchymal tumors. Also known as mixed pineal tumors ... malignant tumor likely to invade and spread to nearby tissue in the brain and spine. Pineoblastomas are aggressive and the ...

Hematoxylin and eosin staining of a frozen section examined intraoperatively shows brain parenchyma with atypical ... revealed a heterogeneously enhancing mass in the left frontal lobe with ...