PMC4508681_01
Computed tomography (CT) showing a left thin acute subdural hematoma in the frontal convex (arrows) and a calcification in the basilar artery and left posterior cerebral artery (arrow heads).
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F1
Computed tomography (CT) of the head revealed a left thin acute subdural hematoma in the left frontal convex with no cranial fractures (Fig. 1).
Computed tomography (CT) showing the bilateral chronic subdural hematoma with a slight midline shift to the left side 3 weeks later after the initial mild head injury.
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F2
CT of the head revealed bilateral CSDH that was predominant on the right side (Fig. 2).
Postoperative magnetic resonance angiography (MRA) showing mild stenosis of the left internal carotid artery in the cavernous portion, but no intracranial aneurysms (left), and demonstrating that the left posterior cerebral artery runs much more anteriorly (right).
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F3
Magnetic resonance angiography (MRA) revealed mild stenosis of the left internal carotid artery in the cavernous portion, but no intracranial aneurysms (Fig. 3).
Postoperative constructive interference in steady-state (CISS) magnetic resonance (MR) imaging revealing that the P1 and P2 portions of the left posterior cerebral artery (PCA) ran much more anteriorly above the left oculomotor nerve (ON) (left). Oblique-sagittal CISS MR imaging revealed that the left ON was very near to the PCA and superior cerebellar artery (SCA), inset: scout view (center). Coronal CISS MR imaging revealing the wide space surrounding the right ON, but the tight space surrounding the left ON (right).
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F4
MRI revealed that the P1 and P2 portions of the left posterior cerebral artery (PCA) ran much more anteriorly compared to the right PCA. Moreover, it is suspected that the strong compression to the left uncus, the left PCA and the left superior cerebellar artery (SCA) due to bilateral CSDH would result in the left complete oculomotor nerve palsy (Fig. 4).