CEACAM5 and bladder transitional cell carcinoma: The marked and continuous increase of CEA expression with grade in non‐invasive urothelial bladder carcinomas is consistent with a role of CEA expression during tumour progression but the lower rates of of CEA positivity in pT2–4 carcinomas than in pTaG3 and the complete lack of further clinico‐pathological association for CEA expression in muscle‐invasive carcinomas appear to contradict an active tumour promoting role of CEA.