Đang chuẩn bị liên kết để tải về tài liệu:
The Guide to Clinical Preventive Services 2008 - part 2

tỷ lệ mắc ung thư đại trực tràng. Aspirin được sử dụng bởi những bệnh nhân có nguy cơ gia tăng bệnh tim mạch vành đã được chứng minh là làm giảm tất cả nguyên nhân tử vong. Báo cáo bằng chứng và khuyến nghị từ các USPSTF | Primary Prevention of Colorectal Cancer incidence of colorectal cancer. Aspirin use by patients at increased risk for coronary heart disease has been shown to reduce all-cause mortality. The evidence and recommendation statements from the USPSTF for aspirin chemoprophylaxis can be found on the AHRQ Web site http www.preventiveservices.ahrq.gov . More than 80 of colorectal cancers arise from adenomatous polyps. However most adenomatous polyps will not progress to cancer. Age represents a major risk factor for colorectal cancer with approximately 90 of cases occurring after age 50 years. Thirty to fifty percent of Americans older than age 50 will develop adenomatous polyps. Between 1 and 10 of these polyps will progress to cancer in 5 to 10 years. The risk for a polyp developing into cancer depends on the villous architecture degree of cytologic dysplasia size and total number of polyps. All persons older than age 50 who are at average risk for colorectal cancer should be screened for colorectal cancer regardless of their aspirin or NSAID use. The USPSTF recommendation on screening for colorectal cancer can be accessed at http www.preventiveservices.ahrq.gov. This USPSTF recommendation was first published in Ann Intern Med. 2007 146 5 361-64. 12 Screening for Bladder Cancer in Adults Summary of Recommendation The U.S. Preventive Services Task Force USPSTF recommends against routine screening for bladder cancer in adults. Grade D Recommendation. Clinical Considerations Bladder cancer is 2 to 3 times more common in men than in women and is unusual before age 50. Bladder cancer is heterogeneous it is a spectrum of conditions most of which are not life-threatening. Screening tests such as microscopic urinalysis urine dipstick urine cytology or such new tests as bladder tumor antigen BTA or nuclear matrix protein NMP22 immunoassay can detect bladder cancers that are clinically unapparent. However because of the low prevalence of bladder cancer the positive predictive .