KL-6 mucin expression in carcinoma of the ampulla of Vater: Association with cancer progression

Figure 1 Immunohistochemical stain of the ampullary carcinoma tissues using KL-6 antibody. A: A typical example showing moderately positive staining; B: a typical example showing the moderately positive staining of inner surface of glands; C: a typical example in which stained cells are scarcely observed. Original magnification ×200.

Figure 2 Immunohistochemical stain of KL-6 in invasive area of tumor. A: Area of pancreatic tissue invaded by carcinoma; B: normal pancreatic tissue; C: area of duodenal tissue invaded by carcinoma; D: normal duodenal tissue. Original magnification ×200.

Figure 3 A typical example showing moderately positive staining of KL-6 in carcinoma cells in a metastatic lymph node tissue. Original magnification ×100.

Figure 4 Kaplan-Meier curves for overall survival rates of patients with carcinoma of the ampulla of Vater. Patients with positive (solid line, n = 26) and negative (dotted line, n = 12) KL-6 expression were followed-up for over 70 mo.