Central Nervous System Yolk Sac Tumor

A malignant germ cell tumor of the central nervous system composed of primitive-appearing epithelial cells - putatively representing yolk sac endoderm - set in a loose, variably cellular, and often conspicuously myxoid matrix, resembling extra-embryonic mesoblast. Eosinophilic hyaline globules immunoreactive for AFP are a diagnostic feature. (NCI Thesaurus/WHO)

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Central Nervous System Vasculitis

Vasculitis affecting the blood vessels of the brain and/or spinal cord.

Central Nervous System Vascular Malformation

Congenital or acquired malformations involving arteries, veins, or venous sinuses of the brain, spinal cord, and meninges.

Central nervous system tumor

A tumor of the central nervous system, including brain stem glioma, craniopharyngioma, medulloblastoma, and meningioma. Also called CNS tumor.

Central Nervous System Teratoma with Malignant Transformation

A central nervous system teratoma characterized by the presence of a malignant component. The malignant component most often is sarcomatous (rhabdomyosarcoma or…

Central Nervous System Teratoma

A mature or immature teratoma that affects the central nervous system.

Central Nervous System T-Cell Non-Hodgkin Lymphoma

A T-cell lymphoblastic lymphoma or a mature T-cell and NK-cell neoplasm that affects the brain, meninges, or spinal cord.