A Case of Chromoblastomycosis Caused by Fonsecaea Pedrosoi and Investigation of the Pathogenic Fungi
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This case report is about a 34-year-old male with a 12-year history of red plaques around the left knee following a puncture injury caused by a fragment of a brick during his work as a miner in Guangdong Province. A red plaque with a yellow–white crust developed gradually at the puncture site and was accompanied by pruritus. He had been diagnosed previously as psoriasis, or tuberculoderma, but all treatments with several types of topical drugs and systemic medication were unsuccessful. The patient was otherwise healthy. Physical examination revealed a red plaque (approximately 20 cm × 17 cm) on the left upper patella, covered with a yellow–white crust that contained black and red dots without any anabrosis or exudation (Fig. 1a, b). KOH preparation of scales obtained from the lesions on the first visit showed pigmented sclerotic bodies (Fig. 1c). Fungal culture of tissue on Sabouraud dextrose agar (SDA) revealed colonies (Fig. 2a), hyphae and spores (Fig. 2b–d). The...
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