[Subdural hemorrhage of aneurysmal origin]

Area of Science:

• Neurosurgery
• Vascular Neurology

Background:

• Subdural hematomas are typically venous.
• Arterial causes are less common but can be significant.

Observation:

• Two patients presented with subdural hematomas caused by ruptured intracranial aneurysms.
• Aneurysms were located at the internal carotid artery (ophthalmic artery origin) and anterior communicating artery.

Findings:

• Subdural bleeding from aneurysms can be clinically significant, requiring urgent surgery.
• Adhesions from prior hemorrhages likely facilitated subdural bleeding from the aneurysms.

Implications:

• Cerebral angiography is indicated for subdural hematomas with meningeal signs, multi-compartment blood, or rapid progression.
• Highlights the importance of considering arterial sources in specific subdural hematoma presentations.