title: Sphenoethmoidal mucocele masquerading as trochlear palsy.
abstract: Acquired vertical strabismus is commonly caused by superior oblique muscle palsy, often resulting from blunt head trauma or vascular problems, and less often from brain tumors, meningitis, and aneurysms. To date, mucoceles in the ethmoid sinus have rarely been reported as a cause for superior oblique muscle palsy. We report a case of trochlear nerve palsy and subsequent optic neuropathy caused by a mucocele in the ethmoid and sphenoid sinuses.
authors.affiliation: Department of Ophthalmology, Kobe City Medical Center General Hospital, 4-6 Minatojima Nakamachi, Kobe, Hyougo, Japan. matsubara-tky@umin.ac.jp
authors.forename: Mikiko
authors.initials: M
authors.lastname: Kimakura
authors.forename: Akio
authors.initials: A
authors.lastname: Oishi
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Miyamoto
authors.forename: Nagahisa
authors.initials: N
authors.lastname: Yoshimura
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D004172:Diplopia / Q000209:etiology; D005005:Ethmoid Sinus / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009078:Mucocele / Q000175:diagnosis* / Q000601:surgery; D010254:Paranasal Sinus Diseases / Q000175:diagnosis* / Q000601:surgery; D013101:Sphenoid Sinus / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D020432:Trochlear Nerve Diseases / Q000175:diagnosis*