Transsphenoidal encephalocele presenting as complex partial seizure disorder

A 47-year-old man presented with history of recurrent complex partial seizures of 10 years duration with normal clinical findings. Imaging showed a suspected destructive mass lesion in the sphenoid sinus with widespread erosion of the surrounding bone including the temporal base. Transnasal endoscopic sphenoidotomy showed an encephalocele mass, a rare variant of basal encephalocele. Unusual presentation of an encephalocele as a seizure disorder is described