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Oligoastrocytoma

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ICD-10	(ICD-O9382)
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Oligoastrocytomas are a subset of brain tumorthat present with an appearance of mixed glial cell origin, astrocytomaand 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. Oligoastrocytomas, like astrocytomasand oligodendrogliomas, can have malignant (anaplastic) histology. However, lower grades can have less aggressive biology.

Inhaltsverzeichnis

1 Symptoms
2 Diagnosis
3 Treatment
4 Prognosis
5 External links

Symptoms

There are many possible symptoms of oligodendrogliomas that are similar to other gliomas. These symptoms may include headache, seizureand speech or motor changes.

Diagnosis

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 histopathologicexamination (biopsyexamination).

Treatment

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 chemotherapyand radiation therapyof doses and types ranging based upon the patient's needs. Subsequent MRI examination are often necessary to monitor the resection cavity.

Prognosis

Even after surgery, an oligoastrocytoma will often reoccur. The treatment for a reoccurring 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.

External links

Images

Image:Cat brain NASA.jpg

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pt:Oligoastrocitoma

This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Oligoastrocytoma Wikipedia article Oligoastrocytoma.

All text is available under the terms of the GNU Free Documentation License