Primary Tumors
| Characteristic | No. of patients |
|---|---|
| Histology | |
| Adenocarcinoma, well differentiated | 2 |
| Adenocarcinoma, moderately differentiated | 6 |
| Adenocarcinoma, poorly differentiated | 18 |
| Adenocarcinoma, mucinous | 1 |
| Signet ring cell carcinoma | 3 |
| Stage | |
| I | 7 |
| II | 4 |
| III | 15 |
| IV | 4 |