Surgical Anatomy

The neck of the encephalocele may be small (Fig. 15.26) with a large sac whose content may vary in extent, but any brain tissue within it is likely to be nonfunctioning unless the sac is sessile and very broad based.

Encephalocele

Fig. 15.24 a CT and b MR images showing an encephalocele of the roof of the right ethmoid sinuses.

Fig. 15.24 a CT and b MR images showing an encephalocele of the roof of the right ethmoid sinuses.

Middle Turbinate Anatomy

Fig. 15.25 a Sagittal MR image of a posttraumatic frontoethmoidal encephalocele. b Sagittal MR image of a sphenoethmoid encephalocele 20 years after skull base radiotherapy.

Fig. 15.25 a Sagittal MR image of a posttraumatic frontoethmoidal encephalocele. b Sagittal MR image of a sphenoethmoid encephalocele 20 years after skull base radiotherapy.

Middle Turbinate

< Fig. 15.26 Sagittal MR image of an encephalocele in a child successfully closed endoscopically.

Frontoethmoidal Cephalocele

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