Current status of urine cytology: What new does The Paris System for Reporting Urine Cytology bring?

Urine cytology is used for detection of neoplastic cells in urine. It has high sensitivity and specificity in detection high-grade urothelial carcinoma, but it is low sensitive in detection of low-grade carcinoma. Different classification systems were published in the past, need for a more standardized terminology results in Paris System for Reporting Urine cytology. This classification was published in 2016, and it is based on clear diagnostic criteria. Implementation of The Paris System will lead to global standardization and uniformity of urine cytology reports.