title: MELANOCYTOMA OR JUXTAPAPILLARY MELANOMA?
abstract: OBJECTIVE
  To report the case of a melanocytoma of the optic disc leading to severe vision loss, raising concern for possible malignant transformation and optic nerve infiltration.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  A 36-year-old Arabic woman presented to an outside facility with severe vision loss and a clinical picture concerning for optic neuritis with central retinal vein occlusion. On referral to the authors' institution 1 month after initial presentation, the vision of the patient was no light perception in the affected eye, and examination revealed the presence of a pigmented lesion adjacent to the nerve. Although standard 3-T magnetic resonance imaging orbits suggested 15 mm of optic nerve involvement, ultrahigh resolution 7-T magnetic resonance imaging was able to detect only 2 mm of optic nerve involvement.
  
  
  CONCLUSIONS
  Melanocytoma of the optic disc is most often benign and causes few visual symptoms. However, in rare cases it can lead to severe vision loss and raise concern for malignant transformation. A 7-T magnetic resonance imaging provides higher resolution optic nerve images.
authors.affiliation: Department of Ophthalmic Oncology, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio.
authors.forename: Brandon J
authors.initials: BJ
authors.lastname: Baartman
authors.affiliation: Department of Vitreoretinal Diseases and Surgery, University Hospitals Eye Institute, Case Western Reserve School of Medicine, Cleveland, Ohio.
authors.forename: Baseer
authors.initials: B
authors.lastname: Ahmad
authors.affiliation: Department of Ophthalmic Oncology, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio.
authors.forename: Sunil
authors.initials: S
authors.lastname: Srivastava
authors.affiliation: Department of Radiology, Cleveland Clinic Foundation, Cleveland, Ohio.
authors.forename: Stephen
authors.initials: S
authors.lastname: Jones
authors.affiliation: Department of Ophthalmic Oncology, Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, Ohio.
authors.forename: Arun D
authors.initials: AD
authors.lastname: Singh
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D008279:Magnetic Resonance Imaging; D008545:Melanoma / Q000175:diagnosis*; D009508:Nevus, Pigmented / Q000175:diagnosis*; D009898:Optic Disk / Q000473:pathology*; D019574:Optic Nerve Neoplasms / Q000175:diagnosis*