Table 4.

Risk of high-grade dysplasia or malignancy according to cyst size in branch duct IPMN

Reference	Study design	Number of patients	Cyst size	Patients with either high-grade dysplasia or malignancy (%)
Woo et al 109 2009	Retrospective	190	>30 mm	28.5%
Sadakari et al 110 2010	Retrospective	73	>30 mm	3.6% 26.3% (if MPD>5 mm)
Ohtsuka et al 143 2012	Retrospective	172	>30 mm	29.2%
Hirono et al 96 2012	Retrospective	134	>30 mm	47.4%
Sahora et al 85 2013	Retrospective	240	>30 mm	12%
Masica et al, 2017	Retrospective	584	>40 mm	88% sensitivity 40% specificity

IPMN, intraductal papillary mucinous neoplasm; MPD, main pancreatic duct.