Abstract
The Guideline for Abdominal Ultrasound Cancer Screening was published in the Journal of Gastroenterological Cancer Screening in 2011 with the aim of promoting screening homogenization. We investigated the usefulness and problems of this Categorized Criteria. Subjects were 377 patients with 377 lesions who required further examinations in opportunistic screening. We classified the subjects by category using a stored image of the subjects' lesions and investigated the classification results. For lesions found in the final diagnosis, we examined the diagnosis and categorization. The results were Category 0:2 lesions (0.5%), Category 2:105 lesions (27.9%), Category 3:185 lesions (49.1%), Category 4:85 lesions (22.5%). Of the 148 lesions found in the final diagnosis, (39.2%) had been included in Category 2:50 lesions (33.8%), and there were no cases of cancer in Category 2. In this study, we experienced no problems with the cancer screening criteria because no malignant diseases were found in Category 2. Increasing Category 2 meant that the criteria were useful for reducing the number of individuals required to have further examinations. The introduction of the criteria precise pick-up of ultrasound findings is important. To that end, it is necessary to promote education and training of examiners and penetration of the ultrasound findings.
