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A 29-year-old man is brought to the emergency department in a comatose state a few hours after complaining of sudden onset of excruciating headache. Neurologic examination reveals dilated pupils poorly responsive to light. A CT scan of the head without contrast demonstrates hyperdensity within the suprasellar cistern, while MRI is unremarkable. Lumbar puncture shows hemorrhagic cerebrospinal fluid. Which of the following is the most likely diagnosis?

a) Amyloid angiopathy-related hemorrhage
b) Cavernous sinus thrombosis
c) Hemorrhagic infarction
d) Pituitary apoplexy
e) Ruptured berry aneurysm
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e) Ruptured berry aneurysm
e) Ruptured berry aneurysm