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Sagittal MRI of a child with an intra- and suprasellar craniopharyngioma reaching the optic nerves (Type 1). Special attention has to be given to the partial pneumatization of the sphenoid sinus, since the thick bone has to be drilled during the access to the sella. This can cause problems in orientation for the surgeon and endanger the carotid arteries, which may be solved by the use of a microdoppler and/or neuronavigation.
