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Pyelonephritis with bacteremia caused by Listeria monocytogenes: A case report

Shunsuke Uno1, Ryota Hase1, Akihiro Toguchi2

  • 1Department of Infectious Diseases, Kameda Medical Center, 929 Higashicho, Kamogawa, Chiba, Japan.

Journal of Infection and Chemotherapy : Official Journal of the Japan Society of Chemotherapy
|September 8, 2016
PubMed

Insights

This case report details a rare instance of obstructive pyelonephritis caused by Listeria monocytogenes in a 90-year-old woman. The findings highlight the bacterium as a potential cause of urinary tract infections.

Area of Science:

  • Infectious Diseases
  • Nephrology
  • Oncology

Background:

  • Listeria monocytogenes is a known pathogen causing meningitis, colitis, and bacteremia.
  • Obstructive pyelonephritis is a serious kidney infection that can lead to sepsis.
  • Uterine carcinoma can invade the ureter, causing urinary tract obstruction.

Observation:

  • A 90-year-old woman presented with fever, chills, and left costovertebral angle tenderness.
  • Computed tomography revealed hydronephrosis and complete ureteral obstruction due to uterine cancer invasion.
  • Blood and urine cultures identified Listeria monocytogenes as the causative agent.

Findings:

  • This is the first reported case of obstructive pyelonephritis caused by Listeria monocytogenes.
  • The patient was successfully treated with ampicillin and sulfamethoxazole/trimethoprim.
  • Listeria monocytogenes was identified in both blood and urine cultures.

Implications:

  • Clinicians should consider Listeria monocytogenes in the differential diagnosis of pyelonephritis, especially in elderly patients with risk factors.
  • Early recognition and appropriate antibiotic treatment are crucial for favorable outcomes.
  • This case underscores the importance of comprehensive microbiological evaluation in complex urinary tract infections.
Keywords:
Listeria monocytogenesNephrostomyObstructive pyelonephritisUterus carcinoma

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