Brain tumor classification: Difference between revisions

	Brain tumor Microchapters
Patient Information
Overview
Classification Adult brain tumors Glioblastoma multiforme Oligodendroglioma Meningioma Hemangioblastoma Pituitary adenoma Schwannoma Primary CNS lymphoma Childhood brain tumors Pilocytic astrocytoma Medulloblastoma Ependymoma Craniopharyngioma Pinealoma Metastasis Lung cancer Breast cancer Melanoma Gastrointestinal tract cancer Renal cell carcinoma Osteoblastoma Head and neck cancer Neuroblastoma Lymphoma Prostate cancer
Causes
Differentiating Brain Tumor from other Diseases

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Latest revision as of 02:33, 6 November 2017

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]

Overview

Brain tumors can be classified into two main categories: primary and secondary tumors. Primary tumors originate in astrocytes, oligodendrocytes and ependymal cells. Secondary tumors originate in malignant cancers located primarily in other organs. Brain tumors are classified depending on location of the tumor, type of tissue involved and whether they are benign or malignant.

Classification

Primary tumors

Tumors occurring in the brain include:

Most primary brain tumors originate from glia (gliomas) such as astrocytes (astrocytomas), oligodendrocytes (oligodendrogliomas), or ependymal cells (ependymoma). There are also mixed forms, with both an astrocytic and an oligodendroglial cell component. These are called mixed gliomas or oligoastrocytomas. Plus, mixed glio-neuronal tumors (tumors displaying a neuronal, as well as a glial component, e.g. gangliogliomas, disembryoplastic neuroepithelial tumors) and tumors originating from neuronal cells (e.g. gangliocytoma, central gangliocytoma) can also be encountered.

Other origins of primary brain tumors include: primitive neuroectodermal tumors (PNET, e.g. medulloblastoma, medulloepithelioma, neuroblastoma, retinoblastoma, ependymoblastoma), tumors of the pineal parenchyma (e.g. pineocytoma, pineoblastoma), ependymal cell tumors, choroid plexus tumors, neuroepithelial tumors of uncertain origin (e.g. gliomatosis cerebri, astroblastoma), etc.

Secondary tumors and non-tumor lesions

Secondary or metastatic brain tumors originate from malignant tumors (cancers) located primarily in other organs. Their incidence is higher than that of primary brain tumors. These tumor cells reach the brain via the blood-stream. The most frequent types of metastatic brain tumors are:

Some non-tumoral masses and lesions can mimic tumors of the central nervous system. These include:

Tuberculosis of the brain
Cerebral abscess (commonly in toxoplasmosis)
Hamartomas (for example, in tuberous sclerosis)
Von Recklinghausen neurofibromatosis

References

Template:WikiDoc Sources

@@ Line 4: / Line 4: @@
 ==Overview==
-Brain tumors can be classified into two main categories: '''primary''' and '''secondary''' tumors. Primary tumors originate in astrocytes, oligodendrocytes and ependymal cells. Secondary tumors originate in malignant cancers located primarily in other organs. Brain tumors are classified depending on location of the tumor, type of tissue involved, whether they are benign or malignant.
+Brain tumors can be classified into two main categories: primary and secondary tumors. Primary tumors originate in astrocytes, oligodendrocytes and ependymal cells. Secondary tumors originate in malignant cancers located primarily in other organs. Brain tumors are classified depending on location of the tumor, type of tissue involved and whether they are benign or malignant.
 ==Classification==
@@ Line 25: / Line 25: @@
 Most primary brain tumors originate from [[glial cells|glia]] ([[glioma]]s) such as astrocytes ([[astrocytomas]]), oligodendrocytes ([[oligodendrogliomas]]), or ependymal cells ([[ependymoma]]). There are also mixed forms, with both an astrocytic and an oligodendroglial cell component. These are called [[mixed gliomas]] or [[oligoastrocytomas]]. Plus, mixed glio-neuronal tumors (tumors displaying a neuronal, as well as a glial component, e.g. [[ganglioglioma]]s, [[disembryoplastic neuroepithelial tumor]]s) and tumors originating from neuronal cells (e.g. [[gangliocytoma]], central gangliocytoma) can also be encountered.
-Other varieties of primary brain tumors include: [[primitive neuroectodermal tumor]]s (PNET, e.g. medulloblastoma]], medulloepithelioma, [[neuroblastoma]], [[retinoblastoma]], [[ependymoblastoma]]), tumors of the [[pineal gland|pineal]] [[parenchyma]] (e.g. pineocytoma, pineoblastoma), [[ependyma]]l cell tumors, [[choroid plexus]] tumors, neuroepithelial tumors of uncertain origin (e.g. [[gliomatosis cerebri]], astroblastoma), etc.
+Other origins of primary brain tumors include: [[primitive neuroectodermal tumor]]s (PNET, e.g. [[medulloblastoma]], medulloepithelioma, [[neuroblastoma]], [[retinoblastoma]], [[ependymoblastoma]]), tumors of the [[pineal gland|pineal]] [[parenchyma]] (e.g. pineocytoma, pineoblastoma), [[ependyma]]l cell tumors, [[choroid plexus]] tumors, neuroepithelial tumors of uncertain origin (e.g. [[gliomatosis cerebri]], astroblastoma), etc.
 ===Secondary tumors and non-tumor lesions===
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 [[Category:Neurology]]
 [[Category:Mature chapter]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Neurology]]
+[[Category:Neurosurgery]]