, Volume 184, Issue 2, pp 349–352 | Cite as

A Case of Chromoblastomycosis Caused by Fonsecaea Pedrosoi and Investigation of the Pathogenic Fungi

  • Ruifeng Zhang
  • Yuping RanEmail author
  • Hao Zhang
  • Yaling Dai
  • Xin Ran
  • Chaoliang Zhang
  • Wei Qin
  • Liyan Xi

Case Report

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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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Dermatovenerology, West China HospitalSichuan UniversityChengduChina
  2. 2.Department of DermatologyHanzhong Central HospitalHanzhongChina
  3. 3.Department of Laboratory Medicine, West China HospitalSichuan UniversityChengduChina
  4. 4.State Key Laboratory of Oral Diseases, West China Hospital of StomatologySichuan UniversityChengduChina
  5. 5.Department of DermatovenerologySecond Affiliated Hospital of Sun Yat-Sen UniversityGuangzhouChina

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