Table 2.
| Rectal Cancer | Center A |
Center B |
Center C |
Total ICO |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | P | ||
| Total cases included | 40 | 33.3% | 40 | 33.3% | 40 | 33.3% | 120 | 100% | ||
| Sex | Men | 30 | 75.0 | 29 | 72.5 | 27 | 67.5 | 86 | 71.7 | 0.750 |
| Women | 10 | 25.0 | 11 | 27.5 | 13 | 32.5 | 34 | 28.3 | ||
| Age (years) | <60 | 28 | 23.3 | 6 | 15.0 | 9 | 22.5 | 13 | 32.5 | 0.532 |
| 60-69 | 42 | 35.0 | 15 | 37.5 | 16 | 40.0 | 11 | 27.5 | ||
| 70-79 | 40 | 33.3 | 14 | 35.0 | 13 | 32.5 | 13 | 32.5 | ||
| ≥80 | 10 | 8.3 | 5 | 12.5 | 2 | 5.0 | 3 | 7.5 | ||
| Histology | Squamous cell carcinoma | 1 | 2.5 | · | · | · | · | 1 | .8 | 0.365 |
| Invasive adenocarcinoma | 39 | 97.5 | 40 | 100 | 40 | 100 | 119 | 99.2 | ||
| Histological grade | Well differentiated | 17 | 42.5 | 9 | 22.5 | 17 | 42.5 | 43 | 35.8 | 0.005* |
| Moderately differentiated | 10 | 25.0 | 3 | 7.5 | 7 | 17.5 | 20 | 16.7 | ||
| Poorly differentiated | 3 | 7.5 | 1 | 2.5 | · | · | 4 | 3.3 | ||
| Missing† | 10 | 25.0 | 27 | 67.5 | 16 | 40.0 | 53 | 44.2 | ||
| Percentage of patients undergoing MRI | Yes | 36 | 90.0 | 38 | 95.0 | 40 | 100.0 | 114 | 95.0 | |
| No | 4 | 10.0 | 2 | 5.0 | 6 | 5.0 | 0.122 | |||
| Distance from tumor to anal verge | 0-5 cm | 9 | 22.5 | 2 | 5.0 | 13 | 32.5 | 24 | 20.0 | <0.001* |
| 5-10 cm | 19 | 47.5 | 7 | 17.5 | 15 | 37.5 | 41 | 34.2 | ||
| >10 cm | 6 | 15.0 | 11 | 27.5 | 17 | 14.2 | ||||
| Missing† | 6 | 15.0 | 31 | 77.5 | 1 | 2.5 | 38 | 31.7 | ||
| Distance from tumor to mesorectal fascia (mm) (rCRM) | ≤1 mm | 6 | 15.0 | 9 | 22.5 | 14 | 35.0 | 29 | 24.2 | 0.013* |
| >1 mm | 12 | 30.0 | 14 | 35.0 | 19 | 47.5 | 45 | 37.5 | ||
| Missing† | 22 | 55.0 | 17 | 42.5 | 7 | 17.5 | 46 | 38.3 | ||
| TNM staging⁎ (presurgical) | II | 3 | 7.7 | 6 | 15.0 | 5 | 12.5 | 14 | 11.8 | 0.666 |
| III | 33 | 84.6 | 29 | 72.5 | 31 | 77.5 | 93 | 78.2 | ||
| IV | 3 | 7.7 | 5 | 12.5 | 4 | 10.0 | 12 | 10.1 | ||
| Missing† | 1 | 1 | ||||||||
| Percentage of patients diagnosed in ICO | Yes | 5 | 12.5 | 29 | 72.5 | 10 | 25 | 44 | 36.7 | <0.001* |
| No | 31 | 77.5 | 10 | 25.0 | 30 | 75.0 | 71 | 59.2 | ||
| Missing† | 4 | 10.0 | 1 | 2.5 | 0 | 0.0 | 5 | 4.2 | ||
| Percentage of cases presented in multidisciplinary committee to evaluate initial treatment plan | Yes | 19 | 47.5 | 29 | 72.5 | 28 | 70.0 | 76 | 63.3 | |
| No | 20 | 50.0 | 11 | 27.5 | 12 | 30.0 | 43 | 35.8 | 0.1 | |
| Missing† | 1 | 2.5 | 1 | .8 | ||||||
| Percentage of patients diagnosed at ICO and presented at multidisciplinary committee to evaluate initial treatment plan | Yes | 4 | 80.0 | 25 | 86.2 | 10 | 100.0 | 39 | 88.6 | |
| No | 1 | 20.0 | 4 | 13.8 | 5 | 11.4 | 0.402 | |||
| Percentage of patients presented at clinical session in radiation oncology service prior to initiating RT | Yes | 36 | 90.0 | 37 | 92.5 | 40 | 100.0 | 113 | 94.2 | |
| No | 2 | 5.0 | 3 | 7.5 | 5 | 4.2 | 0.134 | |||
| Missing† | 2 | 5.0 | 2 | 1.7 | ||||||
a
TNM Classification of Malignant Tumours (UICC) (Five edition, 1997)
†
No data found in the medical records.