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Case Study: November 2013
History
- Per-limbal cyst in a 40 year old female.
- Rest of ocular examination normal. Eye not ‘hot’.
- No significant past medical history.
- Fig1-H and E
- Fig 2 H and E-cyst contents
- Fig 3-MST stain.
Questions
- What does figure 1 illustrate and what is the diagnosis from this power?
- What do figs 2 and 3 show.
- What is the revised diagnosis and can the appearance be explained?
Click to show answers
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- At this power, this is a covnentional conjunctival epithelial retention cyst.
- Fungal hyphae and spores
- Retention cyst containing fungal hyphae and spores. Don’t look like candida. The cliniciands said that the lesions was ‘pigmented’ and faded with time…this sounds like phaeohyphomycosis that are melanin-containing. The cause is probably implantation from trauma. The patient did not wear contact lenses.
