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. 2013 Oct 15;6(11):2476–2486.

Figure 3.

Figure 3

Duodenal mucosal involvement by pancreatic ductal adenocarcinoma (PDAC) in one duodenal biopsy. A. Hematoxylin and eosin stain showing malignant glands in the duodenal biopsy (original magnification 100X; black arrows: malignant glands); B. Diffuse strong MUC1 expression in malignant glands (100X); C. MUC4 expression in malignant glands (100X; note: scattered MUC4 expression in background duodenal mucosa); D. MUC5AC expression in malignant glands (200X; note: MUC5AC positive mucin in the glands); E. Focal mesothelin expression by malignant glands (200X); F. Lack of MUC2 expression in one large malignant glands (200X); G. No CDX2 expression in malignant glands (200X); H. Loss of DPC4 expression in malignant glands (200X).