title: Painful vertical diplopia as a presentation of a pituitary mass.
abstract: BACKGROUND
  Pituitary tumours may present with a variety of neurological and endocrinological signs and symptoms. It is very rare however for them to present with sudden onset painful diplopia. The current literature and possible mechanisms for this are discussed.
  
  
  METHODS
  We describe a case of a pituitary mass which presented with sudden onset painful diplopia with an associated restricted pattern on Lees Chart testing. This led to an initial working diagnosis of orbital myositis.
  
  
  CONCLUSIONS
  Awareness of different modes of presentation of pituitary lesions is important so that appropriate imaging may be requested and delay in diagnosis prevented.
authors.affiliation: Department of Ophthalmology, Royal Liverpool University Hospital, UK. shveta.ophth@gmail.com
authors.forename: Shveta
authors.initials: S
authors.lastname: Bansal
authors.forename: Kaveri
authors.initials: K
authors.lastname: Mandal
authors.forename: Ahmed
authors.initials: A
authors.lastname: Kamal
mesh_terms: D003937:Diagnosis, Differential; D004172:Diplopia / Q000175:diagnosis*; D004814:Epidermal Cyst / Q000175:diagnosis* / Q000601:surgery; D005133:Eye Movements; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010146:Pain / Q000175:diagnosis*; D010147:Pain Measurement; D010900:Pituitary Diseases / Q000175:diagnosis* / Q000601:surgery