title: Melanocytoma of the Optic Nerve Head, Thirty-Month Follow-Up.
abstract: BACKGROUND
  Optic nerve head (ONH) melanocytoma is a benign pigmented tumor that is detected as a dark brown mass on or adjacent to the optic disc. Ultrasonography, optical coherence tomography (OCT), and fundus fluorescein angiography (FFA) can be used to differentiate it from other pigmented tumor as well as to monitor tumor growth. Visual field changes are variable in ONH melanocytoma. Usually, ONH melanocytoma has a stationary course with few cases of progressive growth or malignant transformation.
  
  
  METHODS
  A 54-year-old female complained of blurring of vision. Best-corrected visual acuity (BCVA) was 0.9 in both eyes. On routine fundus examination, an elevated pigmented lesion was found, involving the optic nerve head of the left eye. B-scan ultrasound demonstrated a mass arising from ONH. FFA revealed blocked fluorescence corresponding to pigmented mass. HR-OCT scans showed a dome-shaped, elevated ONH lesion with highly reflective layer and optical shadowing behind it, obscuring most of the optic nerve head details. On regular follow-up for 30 months, the lesion had neither changed in its size nor affected the patient's visual acuity.
  
  
  CONCLUSIONS
  ONH melanocytoma is a benign tumor with rare malignant transformation and visual impairment.
authors: a Aswan Eye and Laser Center , Aswan , Egypt and.
authors: Hasan
authors: H
authors: Eldaly
authors: b Ophthalmology Department , Assiut University Hospital , Assiut , Egypt.
authors: Zeiad
authors: Z
authors: Eldaly
mesh_terms: D005260:Female; D005451:Fluorescein Angiography; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D009508:Nevus, Pigmented / Q000175:diagnosis*; D009898:Optic Disk / Q000473:pathology*; D019574:Optic Nerve Neoplasms / Q000175:diagnosis*; D041623:Tomography, Optical Coherence; D014792:Visual Acuity; D014794:Visual Fields
keywords: Blocked fluorescence; blurring of vision; malignant transformation; optical coherence tomography; pigmented optic nerve head lesion