Fig. 4

Representative micrographs of the intraductal tubulopapillary neoplasm (ITPN; a–e) and the intraductal papillary mucinous neoplasm (IPMN; f–j) specimens, immunostained for CDX-2 (a, f), MUC-1 (b, g), MUC-2 (c, h), MUC-5 AC (d, i), and MUC-6 (e, j). ITPN stained positive for CDX-2 (a), MUC-1 (b), and MUC-6 (e), and negative for MUC-2 (c) and MUC-5 AC (d). IPMN stained positive for MUC-5 AC (i) and MUC-6 (j), and negative for CDX-2 (f), MUC-1 (g), and MUC-2 (h)