TABLE 3.
Factors associated with lymph node metastasis in patients with submucosal cancer
| Characteristic | Node-negative (n=144) | Node-positive (n=37) | Node-positive, % | χ2 | P |
|---|---|---|---|---|---|
| Histological classification | |||||
| Differentiated | 117 | 24 | 17.02 | 4.4344 | 0.0352 |
| Undifferentiated | 27 | 13 | 32.50 | ||
| Macroscopic type | |||||
| Elevated | 22 | 1 | 4.55 | 3.2711 | 0.0705 |
| Flat | 22 | 6 | 21.43 | ||
| Depressed | 100 | 30 | 23.08 | ||
| Tumour size | |||||
| <2 cm | 76 | 11 | 12.64 | 6.0016 | 0.0143 |
| ≥2 cm | 68 | 26 | 27.66 | ||
| Tumour location in the stomach | |||||
| Upper one-third | 43 | 5 | 10.42 | 4.9990 | 0.0254 |
| Middle one-third | 45 | 11 | 19.64 | ||
| Lower one-third | 56 | 21 | 27.27 | ||
| Vascular or lymphatic invasion | |||||
| Negative | 134 | 30 | 18.29 | 4.5814 | 0.0323 |
| Positive | 19 | 10 | 34.48 | ||
Data presented as number of patients (n) unless indicated otherwise