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A nervous system tumor is a tumor that arises within the nervous system, either the central nervous system (CNS) or the peripheral nervous system (PNS). [1] [2] Nervous system primary tumors include various types of brain tumor and spinal tumors, such as gliomas, and meningiomas (of the CNS), and schwannomas (of the PNS) and can be either benign or malignant.
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Neoplasm in the brain Medical condition Brain tumor Other names Intracranial neoplasm, brain tumour, brain cancer Brain metastasis in the right cerebral hemisphere from lung cancer, shown on magnetic resonance imaging Specialty Neurosurgery, neuro-oncology Symptoms Vary depending on the ...
The brain is susceptible to damage from conventional therapy. The brain has a limited capacity to repair itself. Many drugs cannot cross the blood–brain barrier to act on the tumor. Treatment of primary brain tumors consists of palliative (symptomatic) care and therapies intended to improve survival.
Glioblastoma (GBM) is the most common and aggressive malignant brain tumor, accounting for about 15% of all primary malignant brain tumors. GBM invades normal brain tissue, so although it usually ...
For the concepts of benign and malignant neoplasia see Tumor and Cancer. For primary and secondary neoplasias see Metastasis. A brain tumor composed of benign cells, but located in a vital area (as the brain is), can be considered to be life-threatening — although the tumor and its cells would not be classified as malignant. [4]
A central nervous system tumor (CNS tumor) is an abnormal growth of cells from the tissues of the brain or spinal cord. [1] CNS tumor is a generic term encompassing over 120 distinct tumor types. [2] Common symptoms of CNS tumors include vomiting, headache, changes in vision, nausea, and seizures. [3]
In the CNS a tumor may be a secondary malignant tumor having metastasised (spread from a primary site in the body). Treatment and prognosis depend on factors such as the type of tumor, location, and molecular characteristics. [1] Although primary nervous system neoplasms are relatively rare, secondary (metastatic) tumors are more common in ...
1.5.3 Dysembryoplastic neuroepithelial tumor 1.5.4 Diffuse glioneuronal tumor with oligodendroglioma-like features and nuclear clusters 1.5.5 Papillary glioneuronal tumor 1.5.6 Rosette-forming glioneuronal tumor 1.5.7 Myxoid glioneuronal tumor 1.5.8 Diffuse leptomeningeal glioneuronal tumor 1.5.9 Gangliocytoma
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