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Unusual ocular presentations of ocular phaeohyphomycosis
A Maudgil1, Z Johnson2, N Rogers1
1Department of Ophthalmology, Royal Hallamshire Hospital, Sheffield, UK.
Abstract:
PurposePhaeohyphomycosis are melanin-containing fungi that rarely infect the eye. We describe three cases of ocular infection with some unusual clinical features.MethodsSeries of three case reports describing three different presentations of phaeohyphomycosis of the eye, their histopathology, and management.ResultsCase 1 mimicked an inflamed conjunctival naevus and was excised on this basis, revealing a conjunctival retention cyst containing pigmented fungal hyphae. Case 2 showed a wooden foreign body incidentally associated with pigmented fungal hyphae, which required treatment with topical antifungal therapy. Case 3 clinically was thought to be a perforated uveal melanoma and comprised an extensive plaque of pigmented fungal hyphae over ulcerated cornea.ConclusionThe pigmented melanin containing hyphae of phaeohyphomycosis mimicked melanocytic lesions in two cases and was an incidental finding in the context of a surface foreign body.
Insights
Ocular phaeohyphomycosis, caused by melanin-containing fungi, presents rare but diverse eye infections. These cases highlight unusual clinical features and mimicry of melanocytic lesions.
Area of Science:
- Ophthalmology
- Mycology
- Infectious Diseases
Background:
- Phaeohyphomycosis is a rare ocular infection caused by melanin-producing fungi.
- Melanin-containing fungi can present with varied and unusual clinical manifestations in the eye.
Observation:
- Three distinct cases of ocular phaeohyphomycosis are presented.
- Case 1: Conjunctival retention cyst with pigmented fungal hyphae, mimicking an inflamed conjunctival nevus.
- Case 2: Pigmented fungal hyphae associated with a wooden foreign body, treated with topical antifungals.
- Case 3: Extensive corneal plaque of pigmented fungal hyphae, resembling a perforated uveal melanoma.
Findings:
- Ocular phaeohyphomycosis can mimic melanocytic lesions, leading to diagnostic challenges.
- Fungal elements were identified histopathologically in all three cases.
- Management varied from surgical excision to topical antifungal therapy.
Implications:
- Increased awareness of phaeohyphomycosis is crucial for accurate diagnosis and treatment of ocular fungal infections.
- Histopathological examination is essential for definitive diagnosis.
- Prompt and appropriate management can prevent vision-threatening complications.
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