oligodendroglioma

Oligodendrogliomas are a type of glioma that are believed to originate from the oligodendrocytes of the brain or from a glial precursor cell. They occur primarily in adults (9.4% of all primary brain and central nervous system tumors) but are also found in children (4% of all primary brain tumors). With a 0.2 incidence rate out of 100,000 adults, oligodendrogliomas comprise approximately 5% of all central nervous system tumors.

==Signs and symptoms== Oligodendroglioma arise mainly in the frontal lobe and in 50–80% of cases, the first symptom is the onset of seizure activity without any prior symptoms . Headaches associated with increased intracranial pressure are also common in individuals with oligodendroglioma. Depending on the location of the tumor, many different neurological and neuropsychological deficits can be induced, including, but not limited to, visual loss, motor weakness, cognitive decline, and anxiety. A computed tomography (CT) or magnetic resonance imaging (MRI) scan is necessary to characterize tumor size, location, and hetero- or homogeneity. Final diagnosis relies on biopsy and histopathologic examination of the tumor mass.