Thursday, August 07, 2008

Cortical Lipoma

This is a patient with seizure disorder. On MRI a T1 hyperintense lesion was noted in the left frontal region with associated cortical dysplasia. Signal suppresion was noted on Fat-sat T1 weighted images. Fat density on confirmed on CT scan.

Intracranial lipomas are rare lesions, assumed to be resulting from abnormal persistence and maldifferentiation of the meninx primitiva. The majority of the lesions occur at or near midline, mostly in the pericallosal cistern. Other locations include the quadrigeminal/superior cerebellar, suprasellar/interpeduncular, cerebellopontine angle, and sylvian cisterns.

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