ABSTRACT
Primary leptomeningeal melanoma is a rare and aggressive tumor that originates from pial melanin-bearing cells typically along the cerebral conveidties or at the. Base of the brain. It has been hypothesized that malignant transformation Of the preexisting precursor cells leads to diffuse infiltration of the meninges by tumor and the onset of neurological symptoms and signs . The typical neurological symptoms and signs include psychiatric disturbances, seizures, and symptoros and signs of raised intracranial pressure secondary to hydrocephalus. Blindness has been reported as a late feature. Radiotherapy and chemotherapy has been using, but prognosis is poor We d be our experience with 24-years-woman in which the diagnosis of primary leptomeningea1 melanoma without melanotic pigmentation of variable areas of the skm was made.