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Ann Pathol. 2019 Sep;39(5):344-351. doi: 10.1016/j.annpat.2019.04.003. Epub 2019 Jun 26.

[A new terminology for urinary cytopathology: The Paris System for Reporting Urinary Cytology (2015)].

[Article in French]

Author information

Département d'anatomie et cytologie pathologiques, institut universitaire du cancer Toulouse oncopôle, 1, avenue Irène Joliot-Curie, 31059 Toulouse cedex, France. Electronic address:
Département de pathologie, université Paris Descartes, hôpital Cochin, 27, rue du Faubourg Saint-Jacques, 75679 Paris cedex 14, France.
Laboratoire national de santé, Grand Duché de Luxembourg, 1, rue Louis-Rech, 3555 Dudelange, Luxembourg.
Centre de pathologie est, hôpital femme-mère-enfant, hospices civils de Lyon, 59, boulevard Pinel, 69677 Bron cedex, France.


As for the Bethesda system for cervical and thyroid cytopathology, a terminology for reporting urinary cytology has been published in 2015. The new "Paris System" provides a consensus terminology for urinary cytology which underlines the criteria for the recognition of high-grade urothelial carcinoma (HGUC) and of those excluding HGUC, or suspicious for HGUC. It also focuses on new rules to recognize and report the subgroup of "atypical urothelial cells". Here we describe and illustrate the various categories as in the reference book. We analyse the main diagnostic criteria, including microscopic features as well as the risk of malignancy associated to every diagnostic category.


Bladder; Carcinome urothélial; Classification; Cytologie urinaire; Urinary cytology; Urothelial carcinoma; Vessie

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