Case Report

Summary: We describe a 35-year-old man with a history of remote closed head injury who presented with new neu-rologic deficits. A noncontrast head CT scan showed hy-perattenuation involving both temporal lobes, frontal lobes, basal meninges, and cerebellum. A subsequent contrast-en-hanced MR examination of the brain showed enhancement in the basal cisterns extending into the upper cervical spine and throughout the spinal canal. Gross, histologic, and immunohis-tochemical analysis revealed meningeal melanocytoma. Primary pigmented tumors of the leptomeninges are an uncommon and varied group of entities, and include pigmented meningioma, malignant mela-noma, meningeal melanocytoma, melanotic schwannoma, and melanoblastosis. The differential diagnosis is often confusing owing to their simila