title: Mucoceles of the sphenoid sinus.
abstract: OBJECTIVE
  Mucoceles of the sphenoid sinus represent 1-2% of all paranasal sinus mucoceles. The aim of this paper is to report our experiences in patients with mucoceles of the sphenoid sinus.
  
  
  METHODS
  In a period of 4 years, we observed six patients in whom a mucocele of the sphenoid sinus was suggested pre- or intraoperatively. Symptoms and signs included headache, visual loss and palsies of the III and VI cranial nerve. All patients were investigated by MRI and/or CT. Imaging findings were compared with operative and/or histological findings.
  
  
  RESULTS
  In three cases there were simple mucoceles, in one case we found a tumour (nasopharyngeal carcinoma) associated mucocele and in two cases, malignant tumours (carcinoma, chordoma) imitated a mucocele. The diagnosis of simple mucoceles was no problem at all by imaging. Difficulties made the two malignant tumours and the tumour associated mucocele. In the first two cases, repeated histological samples were necessary to make the final diagnosis.
  
  
  CONCLUSIONS
  Mucoceles of the sphenoid sinus should be investigated and handled very carefully with regard to differential diagnoses and tumour associated cases.
authors.affiliation: Klinik für Diagnostische Radiologie, Martin-Luther-Universität Halle-Wittenberg, Magdeburger Strasse 16, D-06097 Halle, Germany. sabrina.koesling@medizin.uni-halle.de
authors.forename: S
authors.initials: S
authors.lastname: Kösling
authors.forename: M
authors.initials: M
authors.lastname: Hintner
authors.forename: S
authors.initials: S
authors.lastname: Brandt
authors.forename: Th
authors.initials: T
authors.lastname: Schulz
authors.forename: M
authors.initials: M
authors.lastname: Bloching
mesh_terms: D000328:Adult; D000368:Aged; D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009078:Mucocele / Q000175:diagnosis* / Q000601:surgery; D010254:Paranasal Sinus Diseases / Q000175:diagnosis* / Q000601:surgery; D013101:Sphenoid Sinus; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA