Table 1.
Patient characteristics
| No. of patients | 46 |
| Age (mean ± SD) | 62.52 ± 11.02 |
| Gender (%) | |
| Male | 34 (74) |
| Female | 12 (26) |
| Tumour Stage (%) | |
| T2N1 | 2 (4.5) |
| T2N2 | 1 (2) |
| T3N0 | 7 (15) |
| T3N1 | 12 (26) |
| T3N2 | 19 (41.5) |
| T4N1 | 1 (2) |
| T4N2 | 4 (9) |
| PET scan participationa (%) | |
| PET1 | 46 (100) |
| PET2 | 40 (87) |
| PET3 | 33(72) |
| Chemotherapy (%) | |
| 5-fluorouracil | 10 (22) |
| Capecitabine | 35 (76) |
| Noneb | 1 (2) |
| Surgery | |
| Anterior resection | 31 (67.5) |
| Abdominoperineal resection | 12 (26) |
| Hartmann’s procedure | 1 (2) |
| No surgeryc | 2 (4.5) |
| TRGd (%) | |
| 0 | 6 (13) |
| 1 | 14 (30.5) |
| 2 | 18 (39) |
| 3 | 6 (13) |
| NAe | 2 (4.5) |
SD, standard deviation;TRG, tumour regression grade.
a
Not all patients underwent all three scheduled scans.
b
One patient was included in a clinical trial where they were administered aspirin.
c
2 patients elected not to undergo surgery.
d
According to AJCC classification.2
e
Histopathological analysis was unable to be obtained as two patients did not undergo surgery.