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Classification: § Depending upon the origin classification done. § CNS tumours are divided into tumours derived from 1) glial cells, 2) neuronal cells,3) cells that surround or insulate the CNS, and 4) cells that form specialized anatomic structures. Pathological Classification: Astrocytic Tumour - Astrocytoma - Anaplastic Astrocytoma - Glioblastoma - Pilocytic - Pleomorphic xantoastrocytoma - Subependymal giant cell astrocytoma Oligodendroglial Tumour - Oligodendroglioma - Anaplastic Oligodendroglioma Ependymal Tumour - Ependymoma - Anaplastic - Myxopapillary Ependymoma - Subependymoma Mixed Glial Tumour Choroid plexus Tumour - Papilloma - Carcinoma Neuroepithelial Tumour - Astroblastoma - Polar spongioblastoma - Gliomatosis cerebri Neuronal & mixed neuronal-glial Tumour - Gangliocytoma - Ganglioglioma - Anaplastic Ganglioglioma - Dysembryoplastic Pineal Tumour - Pineocytoma - Pineoblastoma Embryonal Tumour - Medulloepithelioma - Neuroblastoma - PNET - Medulloblastoma Tumour of cranial & spinal Nr. · Schwanoma · Neurofibroma · Meningioma · Hemangiopericytoma · Germ cell tumor · Pituitary adenoma & carcinoma · Craniopharyngioma Metastatic WHO Working Classification o Glioblastoma most common (30 - 40%) o Anaplastic Astrocytoma 15 to 20% o Medulloblastoma o Oligodendroglioma o Ependymoma o Meningioma o Mixed Oligoastrocytoma o Pliocytic Astrocytoma o Others § Glial cells give rise to specific tumour types include astrocytes (astrocytomas), oligodendrocytes (oligodendrogliomas), and ependymal cells (ependymomas). These tumours together broadly called Gliomas". § Proper and complete classification of tumours is important, because tumour subtyping can affect prognosis and treatment recommendations. |
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Brain Tumour Foundation Of India Tata Memorial Hospital,
Ernest Borges Marg, Parel, Mumbai - 400 012, INDIA
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