Patient demographics | No invasion on MRI, Tsm1/sm2 | mrTsm3/ T2 | mrT3a-T3b | Total |
---|---|---|---|---|
Age (year) | ||||
<65 | 6 | 9 | 7 | 22 |
≥65 | 7 | 22 | 14 | 43 |
Sex | ||||
Male | 8 | 17 | 15 | 40 |
Female | 5 | 14 | 6 | 25 |
Tumour distance from the anal verge | ||||
≤6 cm | 6 | 14 | 4 | 24 |
>6 cm | 7 | 17 | 17 | 41 |
mr N Stage | ||||
mrN0 | 13 | 26 | 11 | 50 |
mrN1-N2 | 0 | 5 | 10 | 15 |
p N stage | ||||
pN0 | 3 | 14 | 14 | 31 |
pN1-N2 | 0 | 7 | 6 | 13 |
n/a | 10 | 10 | 1 | 21 |
Type of surgery performed | ||||
LE | 6 | 5 | 0 | 11 |
TEMS | 4 | 5 | 1 | 10 |
AR | 3 | 21 | 18 | 42 |
Exenteration | 0 | 0 | 2 | 2 |
Quadrant of rectal wall infiltrated by tumour | ||||
Anterior | 4 | 7 | 6 | 17 |
Lateral | 6 | 15 | 12 | 33 |
Posterior | 3 | 9 | 3 | 15 |
pT stage | ||||
Benign adenomas | 4 | 0 | 0 | 4 |
T1sm1 | 1 | 0 | 0 | 1 |
T1sm2 | 5 | 4 | 0 | 9 |
T1sm3 | 2 | 7 | 0 | 9 |
T2 | 1 | 17 | 4 | 22 |
T3* | 0 | 0 | 4 | 4 |
T3a | 0 | 2 | 4 | 7 |
T3b | 0 | 0 | 5 | 4 |
T3c | 0 | 1 | 3 | 4 |
T4 | 0 | 0 | 1 | 1 |
Total | 13 | 31 | 21 | 65 |
*Missing histopathology data about the depth of tumour invasion into the mesorectum.
AR, anterior resection; LE, local excision; n/a, not applicable (patients were treated with local excision), TEMS, transanal endoscopic microsurgery.