Intraductal papillary mucinous neoplasm of the pancreas: cytologic features predict histologic grade. Cancer. 2006;108(3):163–73.Michaels PJ, Brachtel EF, Bounds BC, Brugge WR: Bishop-Pitman M Intraductal papillary mucinous neoplasm of the pancreas: cytologic features predict histologic grade. ...