Fig. 1. Preoperative radiological findings of a 36-year-old male patient (Case 1). A: MRI shows a large extra-axial tumor on the right posterior fossa. B: CT reveals extensive destruction of the occipital bone. C and D: Cerebral angiography demonstrates a strong vascular supply from the right occipital artery, right posterior inferior cerebellar artery, and right posterior meningeal artery.
