Table 4. Correlation between pretreatment clinical characteristics and pathological findings in the phase II study (n=31).
| TRG1–2 | TRG3–4 | |
|---|---|---|
| Clinical characteristics (number of patients) | no. (%) | no. (%) |
| cTNM staging – Gunderson risk of failure | ||
| T1–2/N1; T3N0 – intermediate | 3 (75) | 1 (25) |
| T1–2/N2; T3N1; T4N0 – moderately high (14) | 11 (79) | 3 (21) |
| T3N2; T4N1–2 – high (13) | 8 (61) | 5 (39) |
| Distance of primary tumour from anal verge | ||
| =5 cm (14) | 11 (79) | 3 (21) |
| >5 cm (17) | 11 (65) | 6 (35) |
| Distance of tumour from mesorectal fasciaa | ||
| =5 mm (19) | 15 (79) | 4 (21) |
| >5 mm (9) | 6 (67) | 3 (33) |
TNM=tumour node metastasis.
a
MRI was not performed in three patients, for the presence of metal prosthesis (two patients) and metal stitches (one patient).