We report a 52-year-old male patient who experienced a fish fin sting injury to the dorsum of his index finger resulting in a Mycobacterium marinum tenosyno vitis.

• 我们报告一位52岁男性病例，其右食指遭受鱼鳍刺伤后，手背及手腕逐渐肿胀无力，患者在伤后四个月转诊至本院接受腱鞘切除后才得到正确诊断。