title: An unusual cause of orbital apex syndrome.
authors.forename: C N
authors.initials: CN
authors.lastname: Chua
authors.forename: A R
authors.initials: AR
authors.lastname: Gibson
authors.forename: J
authors.initials: J
authors.lastname: Frank
mesh_terms: D000368:Aged; D005094:Exophthalmos / Q000209:etiology*; D006801:Humans; D008297:Male; D009361:Neoplasm Invasiveness; D009886:Ophthalmoplegia / Q000209:etiology*; D010911:Pituitary Neoplasms / Q000150:complications* / Q000556:secondary*; D011471:Prostatic Neoplasms; D013577:Syndrome; D014786:Vision Disorders / Q000209:etiology*