Colonoscopy and carcinoembryonic antigen variations
Sousa, R. G.; Nunes, A.; Meira, T.; Carreira, O.; Pires, Ana M.; Freitas, J.
Arquivos de Gastroenterologia, 51(1) (2014), 69-72
Colonoscopy is essential for synchronous and metachronous cancer detection. Carcinoembryonic antigen is a colorectal cancer tumor marker, important as a follow-up tool in patients with previous colorectal cancer. False-positive carcinoembryonic antigen elevation results in multiples exams and in patient anxiety. In literature, there is reference to transient carcinoembryonic antigen increase with colonoscopy.