title: Orbital lymphoma mimicking lacrimal gland pleomorphic adenoma.
abstract: OBJECTIVE
  To describe the case of a patient affected by orbital lymphoma mimicking pleomorphic adenoma of the lacrimal gland.
  
  
  METHODS
  This was a retrospective case report.
  
  
  RESULTS
  We present the case of a patient with 15-year history of slowly progressive left proptosis and inferomedial bulbar dislocation who had the presumptive diagnosis of lacrimal gland pleomorphic adenoma based on clinical and radiological features. The patient underwent lateral orbitotomy and lacrimal gland excision. Postoperative histological features were consistent with low-grade B-cell non-Hodgkin lymphoma.
  
  
  CONCLUSIONS
  The accepted clinico-radiological criteria used for the diagnosis of lacrimal gland fossa lesions might have a certain false-positive rate, even in recent years. The initial surgical approach with the appropriate choice between fine-needle aspiration biopsies, intraoperative biopsies and lacrimal gland excisions might be a challenge.
authors.affiliation: Department of Ophthalmological Sciences, University 'Federico II' of Naples, Naples, Italy.
authors.forename: Diego
authors.initials: D
authors.lastname: Strianese
authors.forename: Andrea
authors.initials: A
authors.lastname: Elefante
authors.forename: Francesco
authors.initials: F
authors.lastname: Matarazzo
authors.forename: Angela
authors.initials: A
authors.lastname: Panico
authors.forename: Mariantonia
authors.initials: M
authors.lastname: Ferrara
authors.forename: Fausto
authors.initials: F
authors.lastname: Tranfa
keywords: Lacrimal gland; Orbital lymphoma; Pleomorphic adenoma