Cyst Size Indicates Malignant Transformation in Branch Duct Intraductal Papillary Mucinous Neoplasm of the Pancreas Without Mural Nodules

We conclude that the size criteria (> or =30 mm) to predict malignancy proposed in the international consensus guidelines is appropriate and resection or meticulous follow-up using cytological examination and MPD dilatation is needed in patients with flat branch duct IPMNs.