Performance Characteristics of Urinary Cytology in Patients Presenting with Gross and Microscopic Hematuria

Overview

Journal Am J Clin Exp Urol

Specialty Urology

Date 2021 Nov 19

PMID 34796254

Citations 2

Authors

Tommy Pan

Erik Lehman

Jay D Raman

Affiliations

Soon will be listed here.

Abstract

Purpose: Hematuria investigations presently entail cystoscopy with upper urinary tract imaging albeit without use of urinary biomarkers including cytology. The purpose is to investigate the performance characteristics of urinary cytology in a population of patients presenting with gross (GH) and microscopic (MH) hematuria.

Methods: Records for 409 consecutive patients undergoing a complete hematuria evaluation (cystoscopy with upper-tract imaging) who also had urinary cytology were reviewed. Performance characteristics (sensitivity, specificity, PPV, NPV) of cytology for urothelial malignancy were determined. For those with urothelial cancer, the predictive value of a positive cytology for high grade and high stage urothelial cancer was determined.

Results: 29 of 409 patients (7.1%) were diagnosed with urothelial carcinoma including 24 (9.2%) and 5 (3.4%) from the GH and MH populations, respectively. Eighteen (62%) of these tumors were high grade of which 5 (28%) were muscle-invasive. The performance characteristics of cytology for urothelial malignancy included a sensitivity of 41%, specificity of 99%, PPV of 75%, NPV of 96%, and diagnostic accuracy of 95%. No observed differences were noted when comparing gender (P=0.55), type of hematuria (P=0.37), or smoking history (P=0.22). For those diagnosed with urothelial malignancy, a positive cytology was not associated with higher grade (P=1.0) or stage tumors (P=0.62).

Conclusions: Urine cytology had low sensitivity and PPV for urothelial carcinoma irrespective of smoker status, hematuria type, or gender. These data support the 2020 AUA Microhematuria Guideline emphasizing that urine cytology should not routinely be used in a hematuria screening population.

Citing Articles

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Accuracy of Paris 2016 System for Non-invasive Diagnosis Bladder Malignancy.

Rakhshan A, Arvin E, Alahyari S, Kazeminegad B, Mollasharifi T, Bagheri A Iran J Pathol. 2022; 17(3):328-334.

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