Case Study: August 2013


  • West African female, 40 years old
  • Black nasal limbal lesion, smooth and well defined. Patient poor historian and cannot remember when appeared or whether changing in size
  • Excisional biopsy performed
  • Melanoma / Melanocytoma
  • See figures


  1. What does Fig 1 and 2 illustrate?
  2. What is the diagnosis?
  3. Which further tests can be performed to clarify the nature of the pathology?
Click to show answers
  1. Black, variably-sized foreign material in substantia propria of conjunctiva.
  2. Foreign material of uncertain origin.
  3. Transmission electron microscopy and EDAX. EDAX is being performed on this case and the result is awaited.