Gadolinium-DTPA enhancement of an optic nerve and chiasmal meningioma.
Overview
abstract
The advent of gadolinium-diethylenetriaminepentaacetic acid (Gd-DTPA), a magnetic resonance imaging (MRI) contrast agent, has significantly improved MRI's diagnostic accuracy by enabling the physician to separate magnetically similar but histologically different tissues. A patient with optic nerve meningioma, whose tumor was clearly demonstrated on Gd-DTPA-enhanced MRI but did not appear on noncontrast MRI, is described. The usefulness of contrast agents in MRI diagnosis of neuro-ophthalmologic disorders and ophthalmic tumors is emphasized through this case report.
