Laparoscopic management of intraductal oncocytic papillary neoplasm of the pancreas: Two case reports and review of literature

Figure 2 Hematoxylin-eosin stain and immunohistochemical results. A-F: Case 1; Hematoxylin-eosin stain of intraductal oncocytic papillary neoplasm (IOPN) (magnification: × 100) (A); Immunohistochemical results show that the tumour cells are positive for hepatocyte paraffin 1 (B); Cluster of differentiation 117 (C); MUC5AC (D); MUC6 (E); Negative for MUC2 (magnification: × 100) (F); G-L: Case 2; Hematoxylin-eosin stain of IOPN (magnification: × 100) (G); Immunohistochemical results show that the tumour cells are positive for MUC6 (H); MUC5AC (I); Negative for MUC2 (J); Positive for synaptophysin (K); Cytokeratin pan (magnification: × 100) (L).