| Theme | CT Colonography 2019 -- Recent Advances, Current Status and Its Evaluation as a Modality for Organized Cancer Screening | |
|---|---|---|
| Title | The Usefulness of CT Colonography in Colorectal Cancer Screening from the Viewpoint of Improving the Colorectal Cancer Screening Rate | |
| Publish Date | 2019/03 | |
| Author | Ryoichi Nozaki | Division of Gastroenterology, Coloproctology Center Takano Hospital |
| Author | Hiromi Arima | Division of Radiology, Coloproctology Center Takano Hospital |
| Author | Tetsuya Matsumoto | Division of Radiology, Coloproctology Center Takano Hospital |
| Author | Takayuki Maezaki | Division of Radiology, Coloproctology Center Takano Hospital |
| Author | Hidetaka Imuta | Division of Radiology, Coloproctology Center Takano Hospital |
| Author | Kazutaka Yamada | Division of Gastroenterological Surgery, Coloproctology Center Takano Hospital |
| [ Summary ] | The Japanese government aims to achieve a 50 % screening rate for colorectal cancer screening and 70 % or more (target value ≥ 90 %) for work-up examinations. However, these target values have not yet been achieved. Recently, the use of either a CT colonography (CTC) or flexible sigmoidoscopy in combination with a barium enema X-ray examination has been recommended if colonoscopy is difficult to perform as a work-up procedure. The momentum for the full-scale introduction of CTC as a work-up examination for colorectal cancer screening is increasing year by year. At the present time, most work-up procedures are performed using colonoscopies but the throughput capacity is limited. On the other hand, CTC has a sufficient capacity to improve the rate of work-up examinations. Moreover, CTC can contribute to improving the work-up rate because the accuracy of diagnosis is comparable to a colonoscopy, it is less painful than a colonoscopy, the safety level is high, and it is generally accepted among examinees. However, it is uncertain whether the introduction of a CTC can lead to an improvement in the screening rate. The findings suggest that if CTC is added to the screening items (fecal immunochemical test and colonoscopy), the screening rate may improve to more than 50 %. |
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