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Melanocytoma

Melanocytoma can be considered a subset of choroidal (uveal track) nevus. They arise out of the optic nerve and can obscure the view of the nerve when they are large. They are dark brown to jet-black. They are typically relatively stationery lesions but have been shown to exhibit some enlargement in 10% to 15% of cases and can cause minor visual loss. (Contributed by Dr. James Walters.)

Associated Disorders

  • Bassen-Kornzweig disease
  • Cushing syndrome
  • Kearns-Sayre syndrome
  • Lawrence-Moon-Biedl syndrome
  • Mitochondrial encephalopathy with lactic acidosis and stroke-like episodes (MELAS)
  • Ocular paraneoplastic syndromes
  • Refsum disease
  • Usher syndrome
  • gastroesophageal reflux disease
  • posterior vitreous detachment
  • retinal detachment
  • systemic arterial hypertension
  • systemic lupus erythematosus