Maskens A P, Geboers J, Faivre J
Acta Chir Belg. 1987 Mar-Apr;87(2):87-91.
The exact incidence of rectal cancer in Belgium is not known, due to the absence of an operational national cancer registry. Mortality data however are well documented by death certificates. Annual rectal cancer death rates reach 20 and 13 per 100,000 for men and women respectively in the age category from 45 to 74 years (data from 1981). When similar data obtained for the years 1968 to 1983 are being compared, a significant decrease of rectal cancer mortality can be observed, at a rate of 2.6% annually. Such a decrease is not seen for colon cancer, of which the respective annual death rates are 41 and 33 per 100,000. Absolute figures for the whole Belgian population in 1984 were 3204 deaths due to colorectal cancer, with 2307 cases for colon and 897 cases for rectal cancer. In regions where incidence data are available, it is found that the cumulative risk of colorectal cancer between birth and the age of 75 can reach more than 5% in industrialized countries. Recent incidence data confirm the significant decrease in rectal cancer occurrence.
由于比利时缺乏有效的国家癌症登记系统，该国直肠癌的确切发病率尚不清楚。不过，死亡证明很好地记录了死亡率数据。在45至74岁年龄组中，男性和女性的直肠癌年死亡率分别达到每10万人20例和13例（1981年数据）。当比较1968年至1983年的类似数据时，可以观察到直肠癌死亡率以每年2.6%的速度显著下降。结肠癌未见这种下降情况，其年死亡率分别为每10万人41例和33例。1984年比利时全国人口的绝对数字为3204例因结直肠癌死亡，其中结肠癌2307例，直肠癌897例。在可获得发病率数据的地区，发现在工业化国家，出生至75岁之间患结直肠癌的累积风险可达5%以上。最近的发病率数据证实直肠癌的发病率显著下降。
