2026 Volume 64 Issue 2 Pages 171-176
Objective In Japan, the number of colorectal cancer-related deaths has increased, and one of the reasons for this is the low rate of persons who undergo colorectal cancer screening and a low rate of those who undergo detailed examination. On the other hand, shared decision-making (SDM) (by the patient and medical staff) to add total colonoscopy (TCS) or computed tomography (CT) colonography to a fecal occult blood test for colorectal cancer screening is performed in the United States, where the number of colorectal cancer-related deaths has slightly decreased. In this study, we examined whether SDM-based colorectal cancer screening is possible in Japan from the viewpoint of the processing capacities of TCS and CT colonography.
Subjects and Methods We investigated the implementability of occasional colorectal cancer screening via TCS or CT colonography at 50 years of age based on the number of TCS sessions and that of abdominal CT sessions performed using a ≥16-row multi-slice CT system that facilitates CT colonography.
Results SDM-based occasional colorectal cancer screening is difficult to manage using TCS alone, but it can be performed when CT colonography has increased processing capacity.
Conclusions It is possible to perform SDM-based occasional colorectal cancer screening with TCS and CT colonography as options. If this is realized, it may lead to a decrease in the number of colorectal cancer-related deaths.
