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Summary of the pathological and immunohistochemical features of the six tumors surgically excised
| Tumor | Site | Size (mm) | Gastrin | Serotonin |
| Carcinoid | Duodenum | 14 × 13 | +++ | + (slightly) |
| Carcinoid | Pancreas | 15 × 13 | + (slightly) | +++ |
| Carcinoid | Stomach | 1.2 | - | - |
| Carcinoid | Stomach | 1.8 | NA | NA |
| Carcinoid | Duodenum | 0.5 | NA | NA |
| ECM | Stomach | ≤ 0.1 | NA | NA |
NA: not analyzed; ECM: endocrine cell micronest.
