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The authors recently encountered a unique case of anterior third ventricular neurocysticercosis in which the cyst exhibited an unusually high signal on T1-weighted magnetic resonance imaging. The lesion's signal intensity and location made differentiation from colloid cyst difficult. Intraventricular neurocysticercosis should be included in the differential diagnosis of a colloid cyst.

Biopsy with an add-on unit is safe, reliable, accurate, and cost-effective with results comparable to those reported for dedicated prone biopsy devices.