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Urinary Actinomyces infection with a urachal remnant
  1. Riku Kashiwagi1,
  2. Takashi Watari2,3,
  3. Akiko Oshiro4 and
  4. Koki Kikuchi5
  1. 1Junior Residency Program, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
  2. 2General Medicine Center, Shimane University Faculty of Medicine, Graduate School of Medicine, Izumo, Kanagawa, Japan
  3. 3Master of Healthcare Quality and Safety, University of Michigan Medical Center, Ann Arbor, Michigan, USA
  4. 4Department of Emergency Medicine, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
  5. 5Department of Infectious Diseases, Teine Keijinkai Hospital, Sapporo, Hokkaido, Japan
  1. Correspondence to Dr Takashi Watari; wataritari{at}


Urinary Gram staining is helpful in patients with complicated urinary retention, such as prolonged urinary retention and coexisting ureteral retention disease. If gram-positive rods are observed on urine Gram staining in a patient with urinary tract infection, an anaerobic culture of the urine may be helpful for early diagnosis and treatment of Actinomyces infection.

  • Urinary tract infections
  • General practice / family medicine
  • Infectious diseases
  • Medical education

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  • Contributors RK, AO and KK cared for the patient. RK wrote the draft with TW. AO and KK supervised RK. TW mainly supervised the manuscript. All authors revised and consented to the content of the case report.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.