Differential Diagnosis and Associated Findings The differential diagnosis for leukocyturia is broad and extends beyond simple cystitis. The presence of white blood cells, or leukocytes, in the urine is not a disease itself but a primary indicator of an underlying pathological process, most commonly an infection.
Candidiasis Urine Leukocyte: Fungal Infection Impact on White Blood Cells
Physiological and Pathological Causes Leukocytes in the urine are a physiological response to a variety of conditions affecting the urinary tract. The most common pathological cause is a urinary tract infection (UTI), where bacteria stimulate the migration of white blood cells to the site of infection to contain and eliminate the pathogens.
A positive result, or pyuria, is significant when accompanied by other symptoms such as dysuria, frequent urination, suprapubic pain, or fever. The microscopic exam differentiates between white blood cells, red blood cells, and epithelial cells, while the culture identifies the specific bacterial strain and its antibiotic susceptibility.
Candidiasis Urine Leukocyte: Fungal Infection and Leukocyturia
Furthermore, sterile pyuria, where white blood cells are present without detectable bacterial growth, can occur in cases of interstitial nephritis, renal tuberculosis, or certain sexually transmitted infections like chlamydia and gonorrhea. Concurrent findings are crucial; the presence of white blood cell casts strongly suggests pyelonephritis or interstitial nephritis, indicating renal parenchymal involvement, whereas the presence of bacteria without white cells may point toward a contaminated sample or an early infection phase.
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