Candida urinary tract infections--diagnosis

Area of Science:

• Urology
• Infectious Diseases
• Nephrology

Background:

• Candiduria, the presence of Candida yeast in urine, can indicate various urinary tract conditions.
• Symptoms of Candida infections in the urinary tract are often non-specific, mimicking other pathogens.
• In critically ill patients, candiduria may signal invasive candidiasis.

Purpose of the Study:

• To outline a logical approach for evaluating patients with candiduria.
• To differentiate between asymptomatic candiduria and symptomatic infections.
• To guide the selection of appropriate diagnostic imaging modalities.

Main Methods:

• Verification of funguria through repeat urinalysis and urine culture.
• Microscopic examination of yeast morphology for species identification (e.g., Candida glabrata).
• Initial imaging studies including ultrasonography for kidneys and collecting systems.
• Consideration of computed tomography (CT) for pyelonephritis or abscess detection.

Main Results:

• Pyuria is a common but non-specific finding in candiduria.
• Candida casts in urine suggest renal candidiasis but are infrequent.
• Urine colony counts lack definitive diagnostic utility.
• Ultrasonography is the preferred initial imaging for symptomatic or critically ill patients.

Conclusions:

• Candiduria necessitates a thorough diagnostic workup, not hasty treatment.
• CT scans offer superior visualization of pyelonephritis and perinephric abscesses compared to ultrasound.
• Consultation with radiology and urology is recommended for complex cases requiring advanced imaging like MRI or renal scintigraphy.