A benign or malignant brain and spinal cord tumor that arises from glial cells (astrocytes, oligodendrocytes, ependymal cells). Tumors that arise from astrocytes are called astrocytic tumors or astrocytomas. Tumors that arise from oligodendrocytes are called oligodendroglial tumors. Tumors that arise from ependymal cells are called ependymomas.

A general term for tumors of the central nervous system, including astrocytomas, ependymal tumors, glioblastoma multiforme, and primitive neuroectodermal tumors.

Benign and malignant central nervous system neoplasms derived from glial cells (i.e., astrocytes, oligodendrocytes, and ependymocytes). Astrocytes may give rise to astrocytomas (ASTROCYTOMA) or glioblastoma multiforme. Oligodendrocytes give rise to oligodendrogliomas (OLIGODENDROGLIOMA) and ependymocytes may undergo transformation to become EPENDYMOMA; CHOROID PLEXUS NEOPLASMS; or colloid cysts of the third ventricle. (From Escourolle et al., Manual of Basic Neuropathology, 2nd ed, p21)

New abnormal neuroglial tissue in any one of its stages of development that grows by excessive cellular division and proliferation more rapidly than normal and continues to grow after the stimuli that initiated the new growth cease.

The presence of a glioma, which is a neoplasm of the central nervous system originating from a glial cell (astrocytes or oligodendrocytes).

Gliomas are primary tumors that originate in brain parenchyma. Symptoms are diverse and vary by location, manifesting as focal neurologic deficits, encephalopathy, or seizures. Diagnosis is based primarily on MRI, including both standard T1- and T2-weighted imaging, preferably with gadolinium enhancement, followed by biopsy with...

Glioma is a type of tumor that occurs in the brain and spinal cord. Gliomas begin in the gluey supportive cells (glial cells) that surround nerve cells and help them function.

Glioma refers to a type of brain tumor that develops from the glial cells, which are specialized cells that surround and support neurons (nerve cells) in the brain. It is generally classified based on which type of glial cell is involved in the tumor: Astocytoma - tumors that develop from star-shaped glial cells called astrocytes...

Glioma, a cancerous growth or tumour composed of cells derived from neuroglial tissue, the material that supports and protects nerve cells. Gliomas typically form in the brain or spinal cord and are classified by cell type, location, or grade (based on microscopic features of tumour cells, usually...