Table 2 mrTRG and corresponding MR imaging findings [23]
mrTRG—Findings on MR imaging |
|---|
1. Complete response (linear/crescentic 1–2 mm scar in mucosa or submucosa only, or normalisation of the rectal wall) |
2. Good response (dense fibrosis; no obvious residual tumour, signifying minimal residual disease or no tumour) |
3. Moderate response (> 50% fibrosis or mucin, and visible intermediate signal) |
4. Slight response (little areas of fibrosis or mucin but mostly tumour) |
5. No response (intermediate signal intensity, same appearances as original tumour/tumour regrowth) |