| UC-associated | Sporadic | P value |
---|---|---|---|
Site | Â | Â | Â |
   Left side | 12 | 41 | 0.068 |
   Right side | 3 | 34 |  |
Histological type | Â | Â | Â |
   Well differentiated | 6 | 30 |  |
   Moderately differentiated | 4 | 37 |  |
   Poorly differentiated (including signet-ring cell carcinoma) | 5 | 8 |  |
Depth of invasion | Â | Â | Â |
   Up to MP | 2 | 12 | 0.79 |
   SS/A or deeper | 13 | 63 |  |
Lymph node metastasis | Â | Â | Â |
   Negative | 5 | 31 | 0.56 |
   Positive | 10 | 44 |  |
Stage | Â | Â | Â |
   I | 2 | 9 | 0.14 |
   II | 3 | 22 |  |
   III | 9 | 44 |  |
   IV | 1 | 0 |  |