Abstract
In response to the results of J-START for women in their 40s, it is possible to add auxiliary diagnostic imaging such as US examination in MG examination of high-density breast (Dense Breast: DB) whose detection sensitivity decreases. It is being considered. However, since DB exists at a certain rate even in the 50s and over, there are many unclear issues such as the effects in other age groups and the effects by breast composition. In recent years, compressed breast thickness (CBT) has been attracting attention as an aid in examining the actual state of DB. Based on the report that the detection rate of breast cancer is not low for thin breasts with a CBT of less than 3cm even in DB, CBT is incorporated into the breast composition determination recommended by the sperm mechanism, and it is expected to be a screening stratification factor. In this study, it was found that there is a certain tendency in the relationship between breast composition and CBT in the screening population (general population). Since the relationship with the detected cancer has not been verified, it was difficult to refer to the screening stratification. However, there is room for consideration of its usefulness by comparing it with clinical information such as discovered cancer and intermediate stage cancer. it was thought.
