Journal

The Journal of the Japanese Society for Clinical Microbiology

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[Vol.33 No.1 contents]
Japanese / English

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Article in Japanese

ArticleTitle A case of iliopsoas abscess caused by Campylobacter curvus
Language J
AuthorList Yuko Miyamoto1), Yoko Tazawa1), Yukie Furuhata1), Kohei Hashimoto1), Mau Takagi1), Hajime Horiuchi1), Kiyofumi Ohkusu2)
Affiliation 1) Clinical Laboratory, NTT Medical Center Tokyo
2) Department of Microbiology, Tokyo Medical University
Publication J.J.C.M.: 33 (1), 58-63, 2022
Received March 1, 2022
Accepted August 17, 2022
Abstract We report a case of iliopsoas abscess caused by Campylobacter curvus. A 60s woman presented to our hospital with a complaint of left inguinal swelling that repeatedly flared up, and was diagnosed with an extensive iliopsoas abscess on CT scan. Gram staining of pus sample after draining abscess showed elongated gram-negative rods phagocytosed by leukocytes. Spiral-shaped gram-negative rods were detected from HK semi-fluid medium incubated at 35°C, and were cultured on plate media. After 3 days of incubation, very small colonies were grown on an anaerobic culture of ABHK agar medium at 37°C. The bacterium was identified as C. curvus by 16S rRNA gene sequencing but was difficult to identify by simple identification kits. There are few infection cases by C. curvus worldwide, and C. curvus has been identified by genetic methods in all cases. In this case, 16S rRNA gene sequencing was also useful to identify the causative of iliopsoas abscess bacteria.
Keywords Campylobacter curvus
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