China Journal of Leprosy and Skin Diseases ›› 2025, Vol. 41 ›› Issue (4): 245-247.doi: 10.12144/zgmfskin202504245

• New and Re-epidemic Infectious Skin Diseases • Previous Articles     Next Articles

Mycobacterium marinum infection secondary to branch scratch: a case report

ZHANG Lu1,2,3,WEI Yanjie1,2, ZHANG Peilian1,2   

  1. 1 The First Affiliated Hospital of Yunnan University of Traditional Chinese Medicine, Kunming 650021, China; 2 Department of Dermatology,Yunnan Provincial Hospital of Traditional Chinese Medicine, Kunming 650021, China; 3 Qishan Hospital, Yantai 264000, China
  • Online:2025-04-15 Published:2025-04-08

Abstract: A 50-year-old male presented with red-brown plaques and nodules on the left upper arm for 5 years after being scratched by a tree branch. The disease has been misdiagnosed many times and has been prolonged. The patient was diagnosed as Mycobacterium marinum infection through pathology and high flow sequencing of MetaCAP pathogenic microbial nucleic acid. After 4 months of treatment with clarithromycin, rifampicin and ethambutol, the lesions were significantly improved.

Key words: Mycobacterium marinum, rifampicin, granuloma