title: Treatment of a sphenoid sinus mucocele using an endoscope combined with a navigating system: a case report.
abstract: A sphenoid sinus mucocele extending into the middle cranial fossa and the pterygomaxillary fissure was decompressed using an endoscope in combination with a navigation system. A 59-year-old woman was admitted with a 3 month history of retro-ocular pain and right sided exophthalmos. To evaluate the cystic lesion, a fibreoptic endoscope was inserted into the cyst through an erosive defect in the temporal bone. The histopathological appearance of cyst wall tissue confirmed the diagnosis of mucocele. After 4 months, the mucocele had refilled and the exophthalmos had recurred. At reoperation, the cyst was fenestrated using a rigid endoscope combined with a navigation system inserted via a sublabial transmaxillary approach. The proper site of cyst fenestration was precisely determined using the navigation system, permitting complete evacuation of this large lesion with minimal invasiveness.
authors.affiliation: Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nagatani
authors.forename: K
authors.initials: K
authors.lastname: Saito
authors.forename: J
authors.initials: J
authors.lastname: Yoshida
mesh_terms: D004724:Endoscopy / Q000379:methods*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000379:methods; D009078:Mucocele / Q000000981:diagnostic imaging* / Q000601:surgery*; D013101:Sphenoid Sinus / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed