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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
http://dx.doi.org/10.1590/S0004-28032014000100014

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.