Tumor lesion | Assessment methods |
---|---|
Primary tumor | 1. Colonoscopy should be conducted to determine the location of the primary tumor, tumor size, the proportion of the intestinal lumen that the tumor occupies, and biopsy should be used to confirm the pathology of the tumor (including molecular biology tests, RAS/BRAF gene status, microsatellite instability status, and HER2 status) |
2. Enhanced CT of the entire abdomen | |
Lung metastases | 1. High-resolution chest CT scan1 |
2. Enhanced chest CT scan (when mediastinal lymph node metastases are present) | |
3. Evaluation of lung function | |
Liver metastases | Contrast-enhanced MRI of the liver1 |
Other metastases | 1. Contrast-enhanced MRI of the pelvis (when pelvic implantation metastases are present) |
2. Bone ECT (when symptoms associated with bone metastases are present) | |
3. PET-CT2 |