[Peritonitis due to post-myomectomy Mycoplasma hominis infection]

Yosuke Tanaka1, Yuko Sasaki, Akihito Wada

  • 1Department of Clinical Laboratory, St Marianna University School of Medicine, Yokohama City Seibu Hospital.

Insights

Mycoplasma hominis (M. hominis) can cause difficult-to-diagnose gynecological surgical site infections after myomectomy. Suspect M. hominis when standard treatments fail and cultures are negative.

Area of Science:

  • Gynecology
  • Infectious Diseases
  • Microbiology

Background:

  • Myomectomy is a common surgical procedure for uterine fibroids.
  • Postoperative complications can include surgical site infections.
  • Identifying the causative agent is crucial for effective treatment.

Observation:

  • A patient developed fever and ascites post-myomectomy, unresponsive to beta-lactams.
  • Transvaginal ascitic drainage temporarily resolved symptoms.
  • Recurrent fever and inflammation were treated successfully with clindamycin.

Findings:

  • Mycoplasma hominis (M. hominis) was identified as the causative agent from ascites.
  • M. hominis infections are challenging to diagnose due to slow growth and lack of cell walls.
  • Standard Gram staining is ineffective for Mycoplasma species.

Implications:

  • M. hominis should be suspected in gynecological surgical site infections when conventional treatments fail.
  • Diagnostic methods need to accommodate slow-growing organisms like M. hominis.
  • Early and accurate diagnosis of M. hominis is vital for successful patient outcomes.

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