Table 7.
Histopathological factors affecting endoscopic ultrasonography (EUS) N staging
| Variables | n | Incorrect staging, n (%) | P | Odds ratio (95% CI) | P |
|---|---|---|---|---|---|
| Total |
309 |
90 (29.1) |
|
|
|
| Tumor size, mm |
|
|
|
|
|
| < 20 mm |
80 |
4 (5.0) |
< 0.001 |
4.389 (1.447to13.307) |
< 0.01 |
| 2 to 50 mm |
141 |
38 (27.0) |
|
8.170 (2.468to27.050) |
0.001 |
| ≥ 50 mm |
88 |
48 (54.5) |
|
|
|
| Tumor location I |
|
|
|
|
|
| Upper |
18 |
9 (50.0) |
0.13 |
|
|
| Middle |
137 |
38 (27.7) |
|
|
|
| Lower |
154 |
43 (27.9) |
|
|
|
| Tumor location II |
|
|
|
|
|
| Wall |
162 |
38 (23.5) |
< 0.001 |
1.00 (0.55to1.82) |
0.10 |
| Curvature |
131 |
39 (29.8) |
|
4.38 (1.02to18.83) |
0.05 |
| Circumferential |
16 |
13 (81.3) |
|
|
|
| Histological type |
|
|
|
|
|
| Differentiated |
147 |
41 (27.9) |
0.65 |
|
|
| Undifferentiated |
162 |
49 (30.2) |
|
|
|
| Ulceration |
|
|
|
|
|
| Yes |
227 |
63 (27.8) |
0.38 |
|
|
| No |
82 |
27 (32.9) |
|
|
|
| Lauren |
|
|
|
|
|
| Intestinal type |
142 |
38 (26.8) |
0.23 |
|
|
| Mixed type |
60 |
23 (38.3) |
|
|
|
| Diffuse type |
107 |
29 (27.1) |
|
|
|
| Tumor depth |
|
|
|
|
|
| Mucosa |
107 |
8 (7.5) |
|
3.32 (1.35to8.20) |
< 0.01 |
| Sub-mucosa |
85 |
22 (25.9) |
|
6.92 (2.52to19.03) |
< 0.001 |
| Muscular propria |
36 |
16 (44.4) |
|
4.52 (1.57to12.10) |
< 0.01 |
| Sub-serosa |
34 |
15 (44.1) |
|
6.49 (2.28to18.51) |
< 0.001 |
| Serosa-exposed | 47 | 29 (61.7) | < 0.001 |
CI, confidence interval.