Variable | Islets + Stroma | Islets | Stroma | ||||||
---|---|---|---|---|---|---|---|---|---|
 | < median | ≥ median | P | < median | ≥ median | P | < median | ≥ median | P |
Tumor stage: | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   I-II | 23 | 32 | 0.107 | 24 | 31 | 0.228 | 27 | 28 | 0.840 |
   III-IV | 26 | 18 |  | 25 | 19 |  | 23 | 21 |  |
Histology | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Adenocarcinoma | 24 | 21 | 0.547 | 23 | 22 | 0.841 | 24 | 21 | 0.688 |
   Non-adenocarcinoma | 25 | 29 |  | 26 | 28 |  | 26 | 28 |  |
Tumor grade | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Well to moderate differentiation | 26 | 24 | 0.248 | 29 | 21 | 0.040 | 28 | 22 | 0.248 |
   Poor differentiation | 11 | 19 |  | 10 | 20 |  | 12 | 18 |  |
Lymph node metastasis | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   No | 25 | 34 | 0.103 | 27 | 32 | 0.416 | 29 | 30 | 0.838 |
   Yes | 24 | 16 |  | 22 | 18 |  | 21 | 19 |  |