• Neven Ljubičić, Goran Poropat, Nataša Antoljak, Bašić MarkovićNinaNSchool of Medicine, University of Rijeka, Rijeka, Croatia.Nina Bašić Marković Family Medicine Practice, Rijeka, Croatia.Society of Teachers of General-Family Medicine, Rijeka, Croatia., Vjekoslava Amerl Šakić, Marko Rađa, Dragan Soldo, Davor Štimac, Mirjana Kalauz, Hrvoje Iveković, Marko Banić, Franjo Turalija, Željko Puljiz, and Ivana Brkić Biloš.
• School of Medicine, University of Zagreb, Zagreb, Croatia.
• Acta Clin Croat. 2021 Dec 1; 60 (Suppl 2): 172617-26.

AbstractColorectal cancer is a malignant neoplasm which has an increasing incidence and represents a global public health problem. The majority of patients are diagnosed after the age of 50, and the risk of developing it over lifetime is 5%. Development of preventive, diagnostic and treatment methods has resulted in a significant reduction in mortality and other negative clinical outcomes. Precisely because of the efficient method of prevention and early detection of this disease, numerous countries, including Croatia, have organized national colorectal cancer screening and monitoring programs. However, these programs are primarily organized for the population with the usual, i.e. average risk of developing colorectal cancer. High-risk groups include persons with endoscopically detected and removed colon polyps, persons surgically treated for colon cancer, persons with a positive family history of colorectal cancer, persons with inflammatory bowel diseases, individuals and families with hereditary disorders or genetic mutations that increase the risk of this disease several fold, persons with acromegaly, and patients who have undergone ureterosigmoidostomy. Recommendations for the detection and monitoring of high-risk groups are often not defined clearly, and some of the existing ones are based mostly on scarce scientific evidence. It is commonly accepted that screening in high-risk groups should start at an earlier age, with shorter intervals between follow-ups. The basic diagnostic method for screening and monitoring in these patient groups is endoscopic monitoring, or colonoscopy. The aim of this review paper is to present the characteristics of the abovementioned risk groups and provide clear screening recommendations.

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