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Meningeal Melanocytoma: An Unusual Presentation of a Rare Tumor Melanocitoma Meníngeo: Uma Apresentação Incomum de um Raro Tumor

Meningeal melanocytoma is a rare type of benign pigmented tumor of the central nervous system that derives from leptomeningeal melanocytes, which originate from the neural crest. These tumors are commonly focal, but there are descriptions of multifocal forms in the literature, and reports of malignant transformation, with leptomeningeal dissemination. In this paper, a case of meningeal melanocytoma with leptomeningeal dissemination is reported and, based on a review of the literature, comments on the diagnostic and therapeutic difficul ties relating to this disease are made.