Impact of implementing the paris system for reporting urinary cytology: A single-institutional experience with emphasis on diagnostic yield of high-grade urothelial carcinoma and low-grade urothelial neoplasm

Hyun Hee Koh, Moon Jung Lee, Noh Jin Park, Hyun Soo Kim, Young Lyun Oh

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Background/Aim: The Paris System (TPS) has recently been proposed as a method to standardize urinary cytology reporting. In this study, we evaluated the impact of implementing TPS compared to the traditional reporting system. Patients and Methods: In total, 299 urine samples were reclassified according to TPS. We examined correlations between cytological and histological diagnoses, and calculated probabilities for detecting high-grade urothelial carcinoma (HGUC). Results: TPS resulted in a decrease in the proportion of cases diagnosed as atypical urothelial cell (AUC) (43% to 31%). Among the AUC cases, the proportion of histologically confirmed HGUC cases rose (75% to 80%), as did the proportion of low-grade urothelial neoplasms (57% to 71%). All probabilities for detecting HGUC significantly increased using TPS. Conclusion: TPS improved the diagnostic yield of urinary cytology. The implementation of TPS is expected to be a major step towards standardizing urinary cytology reporting and providing clear information to clinicians.

Original languageEnglish
Pages (from-to)3477-3484
Number of pages8
JournalAnticancer research
Volume40
Issue number6
DOIs
Publication statusPublished - 2020 Jun

Bibliographical note

Publisher Copyright:
© 2020 International Institute of Anticancer Research. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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