Postpartum pyomyoma due to Mycoplasma hominis: A case report

Tomohiro Mitoma, Hikaru Oba, Sakurako Mishima, Akiko Ohira, Satoe Kirino, Kazumasa Tani, Jota Maki, Eriko Eto, Kei Hayata, Hisashi Masuyama

Research output: Contribution to journalArticlepeer-review


Pyomyoma is a rare condition that causes fever and abdominal pain associated with pregnancy, especially in the postpartum period. An appropriate diagnosis and early medical intervention are required to prevent serious complications. A 38-year-old primigravida with uterine fibroids had fever from the 11th day after cesarean section. The fever did not resolve despite repeated daily administration of broad-spectrum β-lactam antibiotics for 2 weeks. Although the physical examination did not show any lower abdominal pain, a pelvic magnetic resonance scan revealed degenerative fibroids, and myomectomy was performed. Yellow-greenish odorless pus inside the uterus was detected, and Mycoplasma hominis was detected in the pus culture. Mycoplasma species are resistant to broad-spectrum penicillin antibiotics and can cause pyomyoma. Pyomyomas may not cause uterine tenderness, and the causative organism may be difficult to identify; therefore, additional imaging studies should be considered.

Original languageEnglish
Article numbere00456
JournalCase Reports in Women's Health
Publication statusPublished - Oct 2022


  • Degenerative fibroid
  • Mycoplasma hominis
  • Postpartum fever
  • Pyomyoma

ASJC Scopus subject areas

  • Obstetrics and Gynaecology


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