Comparative analysis of clinicopathological correlations of cyclooxygenase-2 expression in resectable pancreatic cancer

Figure 1 Overexpression of cyclooxygenase-2 (COX-2) in pancreatic invasive ductal adenocarcinoma with displayed perineural spreading of the tumor (COX-2 immunohistochemistry, original magnification, × 100).

Figure 2 Kaplan-Meier disease free survival (DFS) curves for patients with resectable pancreatic cancer stratified by the level of COX-2 expression examined using monoclonal antibody. High expressors of COX-2 (2+, COX M2) had significantly lower survival curve than low expressors of COX-2 (1+, COX M1) or COX-2 negative cases (0, COX M0), P = 0.019.