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| | #Redirect [[Oligoastrocytoma]] |
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| == Overview ==
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| Oligoastrocytomas are a subset of [[brain tumor]] that present with an appearance of mixed glial cell origin, [[astrocytoma]] and [[oligodendroglioma]]. Often called a "mixed glioma", about 2.3% of all reported brain tumors are diagnosed as oligoastrocytoma. The median age of diagnosis is 42 years of age.
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| Oligoastrocytomas, like [[astrocytomas]] and oligodendrogliomas, can have malignant ([[anaplastic]]) histology. However, lower grades can have less aggressive biology.
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| ==Symptoms==
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| There are many possible symptoms of oligodendrogliomas that are similar to other [[glioma]]s. These symptoms may include [[headache]], [[seizure]] and speech or motor changes.
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| ==Diagnosis==
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| A [[Computed Tomography]] (CT) or [[Magnetic Resonance Imaging]] (MRI) scan is necessary to characterize the anatomy of this tumor (size, location, heter/homogeneity). However, final diagnosis of this [[tumor]], like most tumors, relies on [[histopathologic]] examination ([[biopsy]] examination).
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| ==Treatment==
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| If resected, the surgeon will remove as much of this tumor as possible, without disturbing eloquent regions of the brain (speech/motor cortex) and other critical brain structure. Thereafter, treatment may include [[chemotherapy]] and [[radiation therapy]] of doses and types ranging based upon the patient's needs. Subsequent MRI examination are often necessary to monitor the resection cavity.
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| ==Prognosis==
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| Even after surgery, an oligoastrocytoma will often recur. The treatment for a recurring brain tumor may include surgical resection, chemo and radiation therapy. Survival time of this brain tumor varies - younger age and low-grade initial diagnosis are factors in improved survival time.
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| ==External links==
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| * [http://rad.usuhs.mil/medpix/radpix.html?mode=single&recnum=1066&th=-1 Images]
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| {{Nervous tissue tumors}}
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| {{SIB}}
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| [[Category:Neurosurgery]]
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| [[Category:Neurological disorders]]
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| [[Category:Types of cancer]]
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| == Acknowledgements ==
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| The content on this page was first contributed by: C. Michael Gibson, M.S., M.D.
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| Initial content for this page in some instances came from [http://www.wikipedia.org Wikipedia]
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| ----
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| [[Category:DiseaseState]]
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| [[pt:Oligoastrocitoma]]
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| {{WH}}
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| {{WikiDoc Sources}}
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