COLORECTAL CANCER IN MARRAKECH TENSIFT ELHAOUZ, EPIDEMIOLOGICAL AND ANATOMOPATHOLOGICAL ASPECTS, ABOUT 2584 CASES IN 19 YEARS.

Up to the 20th century, colorectal cancer used to be quite scarce and its incidence has increased at the same rate as the economic development. Currently it is considered amongst the most frequent and the most acute malignant tumors. In Morocco, that cancer remains underestimated because of the lack of screening and the delayed diagnosis. We have made this study to evaluate the different epidemiological as much as the anatomopathological aspects of colorectal cancer in Marrakech. This is a retrospective descriptive study of the different cases of colorectal cancer collected in Marrakech between 1997 and 2015. We could identify 2584 cases of colorectal cancer, 44% of whom have colonic cancer and 56% with rectal cancer. The male gender is predominant with a ratio of 1.34. The mean age in our series was 55.4 years with extreme ages ranging from 18 to 100 years. Polyps and adenomas were the major risk factor in the development of colorectal cancer. The sigmoid colon represented 44% of the different localizations of colon cancer while the lower rectum was the site of predilection of the rectal affections with 32% of the cases. The Lieberkunien adenocarcinoma was distinguished from other histological forms with 87% of all cases of colorectal cancer followed by the mucinous form. From these results, rises the need for the development of screening and prevention strategies at regional and especially national levels based on data from a cancer registry. This is the starting point of a mass movement aiming to improve the patients? access to health care and to medical support.