Urinary cytodiagnosis: can it have a different prognostic implication than a diagnostic test?

Area of Science:

• Uro-oncology
• Diagnostic Cytopathology
• Cancer Biomarkers

Background:

• Transitional cell carcinoma (TCC) diagnosis and prognosis are critical for patient outcomes.
• The role of urinary cytology in assessing TCC's clinical implications requires further elucidation.
• Understanding cytohistologic correlation and prognostic significance is essential for TCC management.

Purpose of the Study:

• To assess the clinical implications of voided urine cytology in transitional cell carcinoma (TCC).
• To evaluate the cytohistologic correlation and prognostic significance of urinary cytology in TCC.
• To determine the diagnostic yield of urinary cytology for upper and lower urinary tract tumors.

Main Methods:

• Analysis of 147 cases of TCC, including 65 patients, focusing on voided urine cytology.
• Correlation of cytologic findings with histopathology, epidermal growth factor receptor (EGFR) expression, Ki-67 proliferation index, muscular invasion, and DNA aneuploidy.
• Evaluation of the prognostic value of positive cytology regarding tumor recurrence and patient survival.

Main Results:

• Urinary cytology detected 42.6% of bladder, 59% of renal pelvic, and 35.3% of ureteral TCCs.
• Positive cytology correlated with EGFR expression, higher proliferation (Ki-67), muscular invasion, and DNA aneuploidy.
• In bladder cancer, positive cytology predicted higher recurrence rates and unfavorable prognosis, with prognostic value in Ta-T1 tumors.

Conclusions:

• Urinary cytology provides significant biological information on TCC.
• Positive cytology is associated with aggressive tumor features and poorer outcomes.
• Urinary cytology serves as a simple, effective short-term prognostic indicator for TCC.