The Art of Mimicry: Anterior Clinoid Dural-Based Cavernous Hemangioma Mistaken for a Meningioma

Cavernous hemangiomas account for 5%-13% of central nervous system vascular lesions. They are usually found intra-axially but rarely involve extra-axial structures, most commonly the middle cranial fossa. A cavernous hemangioma manifesting as a clinoid meningioma is extremely rare.A 36-year-old man presented with an asymptomatic intracranial mass found incidentally after a motor vehicle accident. Preoperative magnetic resonance imaging revealed...