Abstract
An immunoperoxidase study of the presence of carcinoembryonic antigen (CEA) in primary cancers of the urinary bladder, metastases to the bladder, non-malignant diseased bladder, and normal bladder tissues revealed that approximately 10 percent of the urothelial carcinomas (transitional cell and squamous cell types) contained detectable quantities of this antigen. The other tissues were devoid of stainable CEA. It thus appears that the incidence of positive CEA by immunoperoxidase staining of formalin-fixed, paraffin-embedded tumour tissue sections is much less than the frequency of blood or urinary CEA elevations in patients with urothelial cancer.
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