For COX-2 expression, the median total score was 4 (IQR 1.25–8.25) in T1 carcinomas (n = 4), 4 in one T2 carcinoma, 2 (IQR 1–4.5) in T3 carcinomas (n = 10), 2.5 (IQR 0–3.8) in T3 sarcomas (n = 6), 4 (IQR 0–4) in T4 carcinomas (n = 3) and 0 in T4 sarcoma (n = 1). Here, PTGS2 is linked to carcinoma.