1 If two consecutive transfusions yield increments that do not meet the minimum standard for a successful transfusion (see Refractoriness below), the effectiveness of subsequent platelet transfusions should be evaluated by performing a count 10 to 60 minutes after their completion.
American College of Radiology: Starting at 40, get a mammogram every year. American College of Gynecology and Obstetrics: At 40 to 49, get a mammogram every year or every two years; at 50 and older, a mammogram every year. U.S. Preventive Services Task Force: At 50, get a mammogram every two years, ending at 75.
The American Cancer Society recommends mammography every 2 years for women ages 55 and older [14]. Other health organizations recommend women 50-69 have mammograms every year [15]. For a summary of research studies on mammography in women ages 50-69, visit the Breast Cancer Research Studies section.