title: Detection of an occult transclival cerebrospinal fluid fistula by CT and MRI.
abstract: We describe an unusual occult transclival cerebrospinal fluid (CSF) fistula to the sphenoid sinus demonstrated by MRI. CT was performed because of a posterior cerebral infarct caused by cardiac arrhythmia. Axial sections showed fluid in the sphenoid sinus. High-resolution scans revealed a bony defect 3 mm in diameter of the posterior wall of the sphenoid sinus, and MRI showed a transclival CSF fistula. This occult lesion was confirmed by surgery and duraplasty was successfully performed via an endonasal approach.
authors.affiliation: Department of Ear, Nose and Throat Diseases, Head, Neck and Facial Plastic Surgery, Communication Disorders, Academic Teaching Hospital, Marburg University, Fulda, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Schick
authors.forename: D
authors.initials: D
authors.lastname: Brors
authors.forename: A
authors.initials: A
authors.lastname: Goedecke
authors.forename: A
authors.initials: A
authors.lastname: Prescher
authors.forename: W
authors.initials: W
authors.lastname: Draf
mesh_terms: D016080:Arachnoid Cysts / Q000150:complications; D003388:Cranial Fossa, Posterior / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D005402:Fistula / Q000134:cerebrospinal fluid* / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D013101:Sphenoid Sinus / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed