Mycobacterium marinum infection in an older woman with extensive verrucous skin lesions: a case report

Authors

  • Hongyuan Shao Shandong First Medical University, Hospital for Skin Diseases, Shandong, Jinan, China; Shandong Academy of Medical Sciences, Shandong Provincial Institute of Dermatology and Venereology, Shandong, Jinan, China https://orcid.org/0009-0005-4129-2745
  • Yongxia Liu Shandong First Medical University, Hospital for Skin Diseases, Shandong, Jinan, China; Shandong Academy of Medical Sciences, Shandong Provincial Institute of Dermatology and Venereology, Shandong, Jinan, China
  • Donghong Du Shandong First Medical University, Hospital for Skin Diseases, Shandong, Jinan, China; Shandong Academy of Medical Sciences, Shandong Provincial Institute of Dermatology and Venereology, Shandong, Jinan, China
  • Hongqing Tian Shandong First Medical University, Hospital for Skin Diseases, Shandong, Jinan, China; Shandong Academy of Medical Sciences, Shandong Provincial Institute of Dermatology and Venereology, Shandong, Jinan, China

DOI:

https://doi.org/10.1590/S1678-9946202567031

Keywords:

Mycobacterium marinum, Fish injury, Quantitative polymerase chain reaction sequencing technology

Abstract

Mycobacterium marinum is a nontuberculous mycobacterium and an opportunistic pathogen which infects humans. Here, we report a case of an 87-year-old female who had extensive verrucous skin lesions on her upper limbs for 18 months. The patient was diagnosed with Mycobacterium marinum infection by pathology and quantitative polymerase chain reaction (qPCR) assay of skin tissue. After five months of oral rifampicin and clarithromycin, the skin lesions regressed completely.

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Published

2025-06-02

Issue

Vol. 67 (2025)

Section

Case Report

License

Copyright (c) 2025 Hongyuan Shao, Yongxia Liu, Donghong Du, Hongqing Tian

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite

Shao, H., Liu, Y., Du, D., & Tian, H. (2025). Mycobacterium marinum infection in an older woman with extensive verrucous skin lesions: a case report. Revista Do Instituto De Medicina Tropical De São Paulo, 67, e31. https://doi.org/10.1590/S1678-9946202567031