Colorectal adenoma in patients with a history of breast cancer: a prospective study in Taiwan.
1997
: The increased incidence of colorectal cancer in women with a history of breast cancer is well established. However, the relationship between the prevalence of adenomatous polyps and breast cancer is still controversial. We conducted a prospective study of the incidence of colorectal polyps in patients with a history of breast cancer in Taiwan. Eighty-nine patients (86 women and 3 men) received colonoscopy to test for precancerous lesions. Mean age was 49.4 +/- 10.4 years. Twelve polyps (9 adenomatous, 2 hyperplastic, 1 inflammatory) (13.5%) and one cancer (1.1%) were found. The mean age of patients with and without colorectal neoplasia was 56.3 +/- 9.4 and 48.2 +/- 10.2 years respectively, (p < 0.005); 10 out of 13 patients (77%) with colorectal neoplasia were over 50 (p < 0.1). Compared with a study of Chinese people in Hong Kong, our population had a lower incidence of colorectal adenomatous polyps, but breast cancer patients have a greater risk of developing colorectal cancer than the general population in Taiwan.
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