Infection of Mycoplasma hominis in the left lower leg amputation wound of a patient with diabetes: a case report.

Abstract

Background: Mycoplasma hominis is typically found on the mucosal epithelium of the human genital tract, with infections being rare. However, when the mucosal barrier is compromised or in individuals with weakened immune systems, this microorganism can trigger infections in both intragenital and extragenital sites. This study offers a comprehensive overview of infections caused by the rare pathogen M. hominis. This overview helps laboratories identify M. hominis infections in a timely manner, thereby enabling earlier clinical intervention for patients.

Case presentation: A 75-year-old Taiwanese man with type 2 diabetes mellitus initially underwent a left lower extremity amputation following a severe infection caused by necrotizing fasciitis. Subsequently, a poorly healing wound developed at the site of amputation. Upon culturing the wound abscess, M. hominis was isolated and identified as the causative agent.

Conclusions: Through this case, we present clinical and microbiological observations along with a review of the literature to deepen our understanding of M. hominis. Our findings can be used to develop laboratory diagnostic protocols and innovative therapeutic approaches.