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Phaeohyphomycotic cyst caused by Tetraploa aristata
W D Markham1, R D Key, A A Padhye
1Department of Pathology, Flowers Hospital, Dothan, Alabama 36302.
Summary
This study reports the first subcutaneous phaeohyphomycotic infection in a human caused by the fungus Tetraploa aristata. The infection presented as a cyst on the knee of a 54-year-old male patient.
Area of Science:
- Medical Mycology
- Infectious Diseases
Background:
- Phaeohyphomycosis is a fungal infection caused by dematiaceous fungi.
- Tetraploa aristata is a plant-associated fungus previously linked to keratomycosis.
Observation:
- A subcutaneous phaeohyphomycotic cyst was found on the left knee of a 54-year-old man.
- Fungal identification was confirmed through tissue morphology and culture of cyst fluid.
Findings:
- The causative agent was identified as Tetraploa aristata, a dematiaceous hyphomycete.
- This represents the first documented case of subcutaneous phaeohyphomycosis due to T. aristata.
Implications:
- Expands the known spectrum of human infections caused by Tetraploa aristata.
- Highlights the potential of plant-associated fungi to cause subcutaneous infections.