Case Report

Delayed Pneumocephalus-Induced Cranial Neuropathy

Figure 3

Postoperative MRI obtained within 24 hours after surgery. The midsagittal T1-weighted image shows complete resection of pineal cyst with reexpansion of the tectum (a). There is significantly reduced pneumocephalus in the subarachnoid space, but ventricular air is still present (b). Of note, there is no hemorrhage on T1 (c), edema on FLAIR (d), or ischemic changes on diffusion restriction images (e) in the vicinity of the oculomotor nuclei in the dorsal midbrain or oculomotor nerves in the ventral midbrain.
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(a)
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(b)
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(c)
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(d)
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(e)