A 55-year-old man is admitted to the hospital with a complaint of severe headaches. A lumbar puncture reveals traces of blood in the cerebrospinal fluid. Which of the following conditions has most likely occurred in this patient?
Fracture of the pterion with vascular injury A ruptured "berry" aneurysm Leakage of branches of the middle meningeal vein within the temporal bone A tear of the cerebral vein at the entrance to the superior sagittal sinus