Table 2.
MSI and location, histologic differentiation of colorectal cancer
| Group | MSI |
Location n (%) |
Differentiation n (%) |
||
| Pr | Di | PD | WD | ||
| A | + | 8 (66.7) | 4 (33.3) | 9 (75.0)b | 3 (25.0) |
| - | 5 (35.7) | 9 (64.3) | 4 (28.6) | 10 (71.4) | |
| B | + | 1 (50.0) | 1 (50.0) | 2 | 0 |
| - | 4 (22.2) | 14 (77.8) | 5 (27.8) | 13 (72.2) | |
| Total | + | 9 (64.3)a | 5 (35.7) | 11 (78.6)a | 3 (21.4) |
| - | 9 (28.1) | 23 (71.9) | 9 (28.1) | 23 (71.9) | |
a
P < 0.05, vs patients negative for MSI; χ² test.
b
P < 0.05, vs patients negative for MSI in Group A; χ² test. Pr: proximal colon; Di: distal colon (descending, sigmoid colon and rectum); PD: poorly differentiated adenocarcinoma; WD: well and moderately differentiated adenocarcinoma.