The pineal gland is situated approximately in the geometric center of the head. The region is surrounded by critical structures such as the brainstem, and major blood vessels such as the great vein of Galen.
Mass lesions in this region include tumors and cysts. Because of the location and the surroundings, operations in this area are very complex. Fortunately, modern technology such as "stealth" neuro-navigation and endoscopes, make these operations safer and smoother. The surgical approaches that Dr. Jean uses for this region include the occipital interhemispheric transtentorial, and supracerebellar infratentorial appraoches.