Significant (p < 0.05) increases of COX-1, COX-2, mPGES-1 and EP1 were demonstrated in the adenocarcinomas (AC) in comparison with normal ovarian tissue, benign adenomas and borderline tumours (B/BL) (Figure 1, 2, 3, 4, 5). Here, PTGER1 is linked to adenocarcinoma.