PMC3229810_01
(a and b) Sagittal and coronal CT cisternography; (c) coronal MR image; (d) operative field during dissection of the skull base defect
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F1
Magnetic resonance (MR) imaging showed a brain tissue herniation through the bony defect [Figure 1c]. CT cisternography, following administration of intrathecal fluorescein, identified an intrasphenoidal encephalocele on the right side of the sinus [Figure 1a and b]. A fronto-temporal approach was used, and under the operating microscope magnification, intradural dissection was performed until the temporal lobe encephalocele was identified [Figure 1d].
PMC3229810_02
(a, b and d) Coronal MR images showing the temporal lobe encephalocele; (c) CT scan showing the lateral recess of the sphenoid sinus
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F2
Radiological investigations identified a herniated temporal lobe through a bony defect which communicates the middle cranial fossa with the left lateral recess of the SS [Figure 2].