title: Utility of the Paris System in Reporting Urine Cytology.
abstract: OBJECTIVE
  To find out the utility of The Paris System (TPS) in reporting urine cytology and to compare it with the reporting system currently used in our laboratory.
  
  
  METHODS
  This retrospective study was undertaken over a period of 1 year during which slides of all the urine specimens sent for cytological examination were retrieved from our laboratory filling system. They were blindly reviewed and reclassified according to TPS. Surgical follow-up was obtained from the uropathology services of our department.
  
  
  RESULTS
  A total of 176 cases were meticulously reviewed. The mean age of the patients was 52 years, and 71% of cases presented with hematuria. Histopathological follow-up was available in 34 cases. Reporting by TPS detected 13.0% high-grade urothelial carcinoma (HGUC) and 5.1% atypical urothelial cells versus 7.3 and 11.9% by the current reporting system, respectively. The sensitivity and diagnostic accuracy for detecting HGUC of TPS were higher than those of our reporting system.
  
  
  CONCLUSIONS
  TPS has increased the rate of detection of HGUC and reduced the rate of reporting "atypical" urothelial cells. TPS has also standardized the diagnostic criteria, thereby bringing uniformity and reproducibility into the system of reporting for urine cytology.
authors.affiliation: Department of Pathology, Seth G.S. Medical College and King Edward Memorial Hospital, Mumbai, India.
authors.forename: Kiran
authors.initials: K
authors.lastname: Malviya
authors.forename: Gwendolyn
authors.initials: G
authors.lastname: Fernandes
authors.forename: Leena
authors.initials: L
authors.lastname: Naik
authors.forename: Kanchan
authors.initials: K
authors.lastname: Kothari
authors.forename: Mona
authors.initials: M
authors.lastname: Agnihotri
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000652:urine; D002648:Child; D002675:Child, Preschool; D003581:Cytodiagnosis / Q000379:methods*; D005260:Female; D006417:Hematuria / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012189:Retrospective Studies; D016482:Urinalysis; D001749:Urinary Bladder Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000473:pathology / Q000652:urine; D014556:Urine / Q000166:cytology*; D019459:Urothelium / Q000473:pathology*; D055815:Young Adult
keywords: Atypical urothelial cells; Paris System; Urine cytology; Urothelial carcinoma