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Expression of different immunohistochemical markers, divided according to the two different tumor components of strumal carcinoid
| Immunohistochemical marker | Positive staining result, n (%) | |
|---|---|---|
| Follicular component | Neuroendocrine component | |
| Chromogranin | 10 (76.9) | 12 (92.3) |
| Synaptophysin | 1 (8.3) | 13 (100) |
| Thyroglobulin | 13 (100) | 13 (100) |
| TTF1 | 11 (84.6) | 10 (84.6) |
| ISLET1 | 9 (69.2) | 5 (38.4) |
| CDX2 | 0 | 0 |
| Calcitonin | 0 | 0 |
| SSTR2a | 0 | 12 (92.3) |
| SSTR5 | 0 | 6 (46.1) |
