A benign smooth muscle neoplasm arising from the central nervous system. It is characterized by the presence of intersecting fascicles composed of spindle cells that often lack mitotic activity. The disease is Monarch Disease Ontology identifier MONDO_0003287 (central nervous system leiomyoma). Also known as: leiomyoma of CNS, leiomyoma of central nervous system, leiomyoma of the CNS, leiomyoma of the central nervous system.