title: Hypoglobus due to tumours in the superior orbital region.
abstract: BACKGROUND
  Tumours in the superior orbital region can cause hypoglobus. We compare the pre- and postoperative globe position in two patients with different tumour types.
  
  
  METHODS
  A 29-year-old man and a 58-year-old woman presented with pronounced hypoglobus. In both patients time-scale and importance of the lesion were comparable. Imaging suggested a pleomorphic adenoma in the younger patient, whereas the female patient was radiologically diagnosed with a hemangioma.
  
  
  RESULTS
  Both radiological diagnoses could be histologically proven. Both lesions were excised in toto. The adenoma patient showed a full recovery of the preoperatively reduced vision. However, the hypoglobus persisted even after ten months. The hemangioma patient had an immediate full recovery of her hypoglobus.
  
  
  CONCLUSIONS
  The histological type of a tumor in the superior orbit is of importance regarding the degree of reversibility of the accompanying hypoglobus.
authors.affiliation: Department of Ophthalmology, University Hospital Zurich, Zurich, Switzerland. annette.hediger@usz.ch
authors.forename: A
authors.initials: A
authors.lastname: Hediger
authors.forename: K
authors.initials: K
authors.lastname: Landau
authors.forename: K
authors.initials: K
authors.lastname: Chaloupka
mesh_terms: D000236:Adenoma / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery; D000328:Adult; D005128:Eye Diseases / Q000175:diagnosis* / Q000209:etiology* / Q000601:surgery; D005260:Female; D006391:Hemangioma / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery