Update on risk stratification in the Papanicolaou Society of Cytopathology System for Reporting Pancreaticobiliary Cytology categories: 3-Year, prospective, single-institution experience.

The true ROM for PSCPC is likely between the ROM and OROM for the benign and indeterminate categories. In the neoplastic-other category (category IV: other), identifying high-grade dysplasia is important for its association with malignancy and a higher ROM.