title: Fungal ball within Onodi cell mucocele causing visual loss.
abstract: The Onodi cell is a pneumatized posterior ethmoid cell located laterally and superiorly to the sphenoid sinus and closely related to the optic nerve. A mucocele is a benign, expansile, cystlike lesion of the paranasal sinuses that is filled with mucoid secretion. Therefore, optic neuropathy caused by an infected mucocele in an Onodi cell is uncommon. Furthermore, fungal infection superimposed on an Onodi cell mucocele is extremely rare and has not been reported previously. Here, we describe the first case of fungal ball within Onodi cell mucocele causing visual loss, which was completely removed via transnasal endoscopic approach.
authors.affiliation: From the *Department of Otorhinolaryngology and Biomedical Research Institute, Pusan National University School of Medicine, Pusan National University Hospital, Busan, Republic of Korea; and †Department of Otorhinolaryngology and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea.
authors.forename: Yong-Il
authors.initials: YI
authors.lastname: Cheon
authors.forename: Sung-Lyong
authors.initials: SL
authors.lastname: Hong
authors.forename: Hwan-Jung
authors.initials: HJ
authors.lastname: Roh
authors.forename: Kyu-Sup
authors.initials: KS
authors.lastname: Cho
mesh_terms: D001228:Aspergillosis / Q000175:diagnosis*; D001766:Blindness / Q000382:microbiology; D003937:Diagnosis, Differential; D005005:Ethmoid Sinus / Q000382:microbiology*; D006261:Headache / Q000382:microbiology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009078:Mucocele / Q000382:microbiology*; D057605:Natural Orifice Endoscopic Surgery / Q000379:methods; D009901:Optic Nerve Diseases / Q000382:microbiology; D010254:Paranasal Sinus Diseases / Q000382:microbiology*; D014057:Tomography, X-Ray Computed / Q000379:methods