| CT | Computed Tomography |
| CTLA-4 | Cytotoxic T-lymphocyte antigen 4 |
| NET | Neuroendocrine tumors |
| PD-1 | programmed cell death-1 |
| PD-L1 | programmed cell death-ligand 1 |
| RECIST | Response Evaluation Criteria in Solid Tumors |
| TIME | Tumor-immune microenvironments |
| TIL | Tumor-infiltrating lymphocytes |
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