title: An obscure etiology for headache: sphenoid sinus disease.
authors.forename: K J
authors.initials: KJ
authors.lastname: Lee
authors.forename: K
authors.initials: K
authors.lastname: Yanagisawa
mesh_terms: D003937:Diagnosis, Differential; D006261:Headache / Q000209:etiology*; D006801:Humans; D009078:Mucocele / Q000175:diagnosis; D010254:Paranasal Sinus Diseases / Q000150:complications / Q000175:diagnosis*; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis; D011859:Radiography; D012852:Sinusitis / Q000175:diagnosis; D013101:Sphenoid Sinus / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D014786:Vision Disorders / Q000209:etiology