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The Journal of the Japanese Society for Clinical Microbiology |
Biblioraphy Information
| ArticleTitle |
One case that seemed Mycoplasma hominis to be caused by repeated intraperitoneal abscess |
| Language |
J |
| AuthorList |
Maho Takahashi1), Kimiko Ooya1), Aya Kamemura2), Tsuyoshi Kenri3) |
| Affiliation |
1) Department of Clinical Laboratory, Kaetsu Hospital, Niigata, Japan
2) Department of Surgery, Kaetsu Hospital, Niigata, Japan
3) Department of Bacteriology II, National Institute of Infectious Diseases |
| Publication |
J.J.C.M.: 24 (3), 195-200, 2014 |
| Received |
February 4, 2014 |
| Accepted |
May 21, 2014 |
| Abstract |
A 48-year-old woman presented with abdominal pain and fever, which was persistent since she returned from a tour in June 2012. Computed tomography of the abdominal cavity showed the cause to be an ovarian cyst. The cyst was punctured by an echo-guided procedure and the pus in the cyst was discharged. The pus was used for microbiological culture using blood agar and ABHK media in the presence of 5% CO2 and under anaerobic conditions, respectively. After 3 days, water droplet-like bacterial colonies were observed on the medium. Gram staining revealed gram-negative granule-shaped structures. The isolate was tentatively identified as Mycoplasma hominis and was dispatched to the National Institute of Infectious Diseases (NIID) for confirmation. To investigate the route of infection of this bacterium, the vaginal swab sample was sent to NIID for microbiological culture. NIID confirmed the bacterium to be M. hominis based on its 16S rRNA gene sequence, which almost matched that of M. hominis PG21, a previously reported type strain. A similar M. hominis strain was isolated on PPLO medium by using the vaginal swab sample. These results suggest that the infection with commensal M. hominis occurred through the adnexa or uterus and caused the ovarian cyst and associated symptoms. In such cases, the medical history and background of the patient should be considered and M. hominis should be accounted for as a potential etiology. In addition, the information that M. hominis is resistant to β-lactams as well as clarithromycin (CAM) and erythromycin (EM), which are effective against many other Mycoplasma species, should be conveyed to the practicing physician. |
| Keywords |
Mycoplasma hominis |
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