Kewenter J, Ahlman H, Hultén L
Ann Surg. 1978 Dec;188(6):824-8. doi: 10.1097/00000658-197812000-00018.
Two hundred thirty-four patients with extensive ulcerative colitis from the city of Göteborg, Sweden have been followed up and the cumulative risk of development of cancer of the large bowel was estimated. These patients constitute all persons in this region who developed an extensive ulcerative colitis between 1951 and 1974. All patients were followed up until December 1975. The mean observation time was 8.5 years, median value six years. Fifteen patients developed carcinoma of the large bowel. Five of the 15 patients were still alive in December 1975. The expected number of colorectal carcinomas in a matched reference group was 0.49. The cumulative incidence of carcinoma 25 years after the onset of colitis for the whole group of patients was 34% and for those who developed the disease before 25 years of age it was 43%.
对瑞典哥德堡市的234例广泛性溃疡性结肠炎患者进行了随访,并估算了发生大肠癌的累积风险。这些患者构成了该地区1951年至1974年间罹患广泛性溃疡性结肠炎的所有病例。所有患者均随访至1975年12月。平均观察时间为8.5年,中位数为6年。15例患者发生了大肠癌。1975年12月时,这15例患者中有5例仍存活。在匹配的参照组中,结直肠癌的预期病例数为0.49。整个患者组在结肠炎发病25年后的癌症累积发病率为34%,25岁之前发病的患者该发病率为43%。