Infectious Aneurysm Caused by Citrobacter koseri in an Immunocompetent Patient

Takahiro Ando; Satoshi Noguchi; Takako Enokida; Azusa Yamato; Hidenori Kage; Yasuhiro Yamauchi; Aiko Okazaki; Yoshitaka Wakabayashi; Kyoji Moriya; Haruo Yamauchi; Minoru Ono; Takahide Nagase

doi:10.2169/internalmedicine.1806-18

This article has now been updated. Please use the final version.

Infectious Aneurysm Caused by Citrobacter koseri in an Immunocompetent Patient

Takahiro Ando, Satoshi Noguchi, Takako Enokida, Azusa Yamato, Hidenori Kage, Yasuhiro Yamauchi, Aiko Okazaki, Yoshitaka Wakabayashi, Kyoji Moriya, Haruo Yamauchi, Minoru Ono, Takahide Nagase

Author information

Takahiro Ando
Department of Respiratory Medicine, The University of Tokyo, Japan
Satoshi Noguchi
Department of Respiratory Medicine, The University of Tokyo, Japan
Takako Enokida
Department of Respiratory Medicine, The University of Tokyo, Japan
Azusa Yamato
Department of Respiratory Medicine, The University of Tokyo, Japan
Hidenori Kage
Department of Respiratory Medicine, The University of Tokyo, Japan
Yasuhiro Yamauchi
Department of Respiratory Medicine, The University of Tokyo, Japan
Aiko Okazaki
Department of Infectious Diseases, The University of Tokyo, Japan
Yoshitaka Wakabayashi
Department of Infectious Diseases, The University of Tokyo, Japan
Kyoji Moriya
Department of Infectious Diseases, The University of Tokyo, Japan
Haruo Yamauchi
Department of Cardiac Surgery, The University of Tokyo, Japan
Minoru Ono
Department of Cardiac Surgery, The University of Tokyo, Japan
Takahide Nagase
Department of Respiratory Medicine, The University of Tokyo, Japan

Keywords: Citrobacter koseri, infectious aneurysm, periodontal disease, bloodstream infection, endovascular aneurysm repair

JOURNAL OPEN ACCESS Advance online publication

Article ID: 1806-18

DOI https://doi.org/10.2169/internalmedicine.1806-18

The final version of this article is now available: Vol. 58 (2019), No. 6 pp. 813-816

Details

Abstract

Citrobacter species can cause severe infection in immunocompetent patients. A 78-year-old man visited our hospital because he had had a fever lasting one day each month for the past 3 months. Antibiotics were initiated for suspected bronchial pneumonia, but the C-reactive protein level remained high. Contrast-enhanced computed tomography revealed saccular brachiocephalic artery aneurysm. Citrobacter koseri was isolated from a blood culture, and he was diagnosed with infectious brachiocephalic artery aneurysm. He underwent endovascular aneurysm repair after one month of intravenous cefepime and metronidazole. We herein report for the first time an immunocompetent patient with infectious aneurysm caused by C. koseri periodontal infection.

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