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Persistent Candida parapsilosis funguria associated with an indwelling urinary tract stent for more than 7 years
Sheng-Yuan Ruan1, Jung-Yien Chien1, Po-Ren Hsueh2
1Department of Internal Medicine, National Taiwan University Hospital Yun-Lin Branch, Yun-Lin, Taiwan, ROC.
Abstract:
Candiduria is an increasingly common condition, and the lack of effective antifungal treatment in many cases has raised great concern. We report a case of persistent Candida parapsilosis funguria associated with urinary tract instrumentation. Molecular typing suggested that during a 7 year period the C. parapsilosis isolates were all the same strain. Prolonged antifungal therapy and regular catheter replacement failed to eradicate the funguria, but improved urinary symptoms and pyuria. The antifungal susceptibility pattern did not significantly change during the clinical course despite repeated exposure to fluconazole.
Insights
Persistent Candida parapsilosis funguria, often linked to urinary tract instrumentation, presents treatment challenges. Despite prolonged therapy and catheter changes, eradication was not achieved, highlighting the need for novel antifungal strategies.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Urology
Background:
- Candiduria, a fungal infection in urine, is rising.
- Effective antifungal treatments are limited, causing concern.
- Urinary tract instrumentation is a common risk factor.
Observation:
- A persistent case of Candida parapsilosis funguria was observed.
- The infection was associated with urinary tract instrumentation.
- Molecular typing confirmed a single strain persisting over 7 years.
Findings:
- Prolonged antifungal therapy and catheter replacement did not eradicate the funguria.
- Urinary symptoms and pyuria showed improvement.
- Antifungal susceptibility remained unchanged despite fluconazole exposure.
Implications:
- This case underscores the difficulty in treating persistent candiduria.
- The study highlights the need for advanced treatment strategies for resistant fungal infections.
- Understanding strain persistence is crucial for managing recurrent urinary tract infections.
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