PMC9359337_01
Multiple verrucous plaques with crusting over knee transplant surgery scar.
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A 44-year-old man who had undergone renal transplantation and on immunosuppressants (tacrolimus) presented with asymptomatic thick hyperpigmented lesions over the right knee for one month (Figure 1).
Various morphologies of copper pennies on KOH smear.
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Skin scraping with 10% potassium hydroxide (KOH) showed multiple round thick-walled brownish budding bodies resembling different morphologies of copper pennies (also known as sclerotic/muriform/medlar bodies) (Figure 2).
Histopathology showing copper penny bodies of chromoblastomycosis (Hematoxylin & Eosin, 400x).
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An incision biopsy of the lesion showed pseudoepitheliomatous hyperplasia with dermal suppurative granulomas and copper penny bodies, suggestive of chromoblastomycosis (Figure 3).