Presentation
Sudden onset of headache. No loss of consciousness and no focal neurological deficits. No history of trauma. Patient is hypertensive.
Patient Data
Age: 30 years
Gender: Male
From the case:
Primary intraventricular hemorrhage: cause unknown
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Axial non-contrast
There is a hyperdense area of blood density along the left anterior horn, left lateral ventricle and the third ventricle.
Bilateral posterior cerebral arteries originate from the prominent right and left posterior communicating artery respectively suggestive of bilateral fetal origin of PCA.
No aneurysm noted.
Case Discussion
The patient has no history of trauma and cerebral angiography showed no aneurysm. Primary intraventricular hemorrhage (IVH) is less common than the secondary IVH.
Cerebral angiography showed bilateral fetal origin of the PCAs, which is seen in ~8% population as a common anatomical variant.
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