Table 5.
The accuracy of TRUS in each segment of rectum
| Rectum Segment | |||||
|---|---|---|---|---|---|
| I (1, 3]cm(n=55) | II (3, 6]cm(n=123) | III (6, 9]cm(n=32) | IV (9, 12]cm(n=4) | V (12, 16)cm(n=5) | |
|
T stage* Unequal, n (%) |
24 (43.6) | 27 (22.0) | 11 (34.4) | 3 (75.0) | 2 (40.0) |
| Equal, n (%) | 31 (56.4) | 96 (78.0) | 21 (65.6) | 1 (25.0) | 3 (60.0) |
|
N stage* Unequal, n (%) |
13 (23.6) | 14 (11.4) | 8 (25.0) | 1 (25.0) | 3 (60.0) |
| Equal, n (%) | 42 (76.4) | 109 (88.6) | 24 (75.0) | 3 (75.0) | 2 (40.0) |
|
TNM stage* Unequal, n (%) |
27 (49.1) | 30 (24.4) | 13 (40.6) | 3 (75.0) | 4 (80.0) |
| Equal, n (%) | 28 (50.9) | 93 (75.6) | 19 (59.4) | 1 (25.0) | 1 (20.0) |
Equal cases indicate the agreement of preoperative transrectal ultrasound staging and pathological staging. The χ2 test was used to compare differences among each patient groups by T, N or TNM stage, respectively. * indicates statistical difference among groups (P<0.05).