Angioleiomyoma of the falx.

A 43-year-old man arrived at the emergency department following a syncopal episode. Computed tomography and magnetic resonance images demonstrated a small interhemispheric, anterior parafalcine mass that mimicked a meningioma. Surgical excision and subsequent pathologic evaluation revealed an angioleiomyoma and the patient recovered without incident. Angioleiomyomas are classified as benign smooth muscle tumors and are classically seen in adult females arising in the soft tissues of the lower extremities. Although rare, these masses have been described in various intracranial locations, usually extra-axially. A comprehensive review of the literature and discussion are provided, emphasizing histopathologic and imaging features of this uncommon intracranial neoplasm.