Axial FLAIR images show an area of faint hypointensity in the right medial temporal lobe, without significant associated mass effect or edema. This area has bright gyriform enhancement.
ganglioglioma, DNET, gangliocytoma, oligodendroglioma, focal encephalitis or aging infarct less likely.
Gangliogliomas are low grade tumors composed of glial cells and differentiated neurons, are most common in the temporal lobes, and represent approximately 1% of intracranial neoplasms. Clinically, these tumors present with partial complex seizures and/or hypothalamic dysfunction at age 10-20. 5% are associated with additional anomalies (callosal agenesis, Down's). The tumors are calcified in 35%, show no significant mass effect or edema, and have variable enhancement.
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