[Cerebrospinal fluid rhinorrhea from a transclival meningocele: A case report and literature review].

The most common site of CSF leakage is the floor of the anterior cranial fossa, and less commonly in the sphenoid sinus. Only 3-4% of CSF fistulas are spontaneous. The fourth case is presented of a CSF rhinorrhea due to a transclival meningocele, an extremely rare location for these lesions, and the surgical approach. The patient is a 39-year-old male with no history of trauma, and a recent history of watery rhinorrhe and meningitis. CT scan and MRI showed clival bone defect and trans-sphenoidal transclival meningocele. The defect was repaired by transclival trans-sphenoidal endoscopic endonasal approach with good results. Despite the rarity of transclival meningocele, it is recommended to consider it in the differential diagnosis of spontaneous nasal fistulas. The endoscopic endonasal approach is a direct technique that provides satisfactory results in the resolution of CSF rhinorrhea.