Table 2.
Correlation between PDC grade and clinicopathological parameters
| Parameters | PDC grade | P value | |||
|---|---|---|---|---|---|
| G1 | G2 | G3 | |||
| Sex (n (%)) | Male | 75 (31) | 28 (12) | 28 (12) | 0.65 |
| Female | 65 (27) | 18 (8) | 25 (10) | ||
| Age (n (%)) | ≥65 | 52 (22) | 10 (4) | 25 (10) | 0.031 |
| <65 | 88 (37) | 36 (15) | 28 (12) | ||
| Tumor location (n (%)) | Colon | 84 (35) | 29 (12) | 34 (15) | 0.84 |
| Rectum | 56 (23) | 17 (7) | 19 (8) | ||
| Tumor diameter (mm) (mean) | 42.0 | 44.2 | 44.3 | ||
| Depth (n (%)) | pT2 | 43 (18) | 10 (4) | 10 (7) | 0.26 |
| pT3 | 97 (40) | 36 (15) | 43 (18) | ||
| Lymph node involvement (n (%)) | pN0 | 98 (41) | 28 (12) | 20 (9) | <0.0001 |
| pN1 | 40 (17) | 15 (6) | 20 (8) | ||
| pN2 | 2 (1) | 3 (1) | 13 (5) | ||
| Total number of retrieved lymph nodes (mean) | 14.1 | 14.9 | 16.8 | ||
| Lymphatic permeation (n (%)) | Positive | 74 (31) | 16 (7) | 42 (17) | <0.0001 |
| Negative | 66 (28) | 30 (13) | 11 (5) | ||
| Venous infiltration (n (%)) | Positive | 73 (31) | 19 (8) | 19 (8) | 0.095 |
| Negative | 67 (28) | 27 (11) | 34 (14) | ||
| Adjuvant chemotherapy (n (%)) | With | 63 (26) | 27 (11) | 29 (12) | 0.22 |
| Without | 63 (26) | 14 (6) | 19 (8) | ||
| Unknown | 14 (6) | 5 (2) | 5 (2) | ||
PDC: poorly differentiated cluster.