세사대골의 선천적 가성 뇌수막류

Clival Pseudomeningocele

Clival pseudomeningocele is an extremly rare lesion. A 21-year-old man with headache was found to have a clival pseudomeningocele. At first, this lesion was misunderstood to clival chordoma or chondrosarcoma, due to Magnetic resonance imaging (MRI) and 3-dimensional computerized tomography(CT) finding. At operation, by a extended transsphenoidal approach, clival pseudomeningocele was diagnosed grossly, and confirmed by pathologic finding. This is the first case of clival pseudomeningocele in an adult, congenitally. Clival pseudomeningocele should be taken into consideration in patient with clival chordoma or chondrosarcoma