Table 1.

Summary of 5th edition of WHO updates compared to the previous edition (4th edition).

WHO 4th Edition	WHO 4th Edition
Oncocytic variant of IPMN	IOPN is now considered a separate entity
ITPN was considered a variant of IPMN	ITPN is now considered a separate entity
Three-tiered dysplasia grading system Low-grade Intermediate High-grade	Two-tiered dysplasia grading system Low-grade (original intermediate grade is part of the spectrum of low-grade dysplasia) High-grade