Ganglioglioma MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

• Gangliogliomas share imaging features with other low-grade neoplasms.
• Calcification is a common finding.
• Usually little or no associated mass effect or evidence of surrounding vasogenic edema.
• Gangliogliomas have variable manifestations at nonenhanced CT and hypoattenuating mass is the most frequent manifestation.
• Remodeling of the skull may be seen if the neoplasm is located within the peripheral brain.
• MRI appearance of gangliogliomas is also variable and nonspecific.
• In general, the lesions are hypointense to isointense relative to gray matter on T1 weighted images and hyperintense relative to gray matter on T2 weighted images.
• The frequency of enhancement following intravenous administration of iodinated contrast media is variable (16%–80%) of gangliogliomas.