| PAC | Periampullary Cancer |
| AOV | Ampulla of Vater |
| CBD | Common Bile Duct |
| OS | Overall Survival |
| DFS | Disease-Free Survival |
| EMT | Epithelial-Mesenchymal Transition |
| PD-1 | Programmed Death 1 |
| PDL | Programmed Death Ligand |
| TMA | Tissue Microarray |
| FGFR | Fibroblast Growth Factor Receptor |
| IGF1 | Insulin-Like Growth Factor 1 |
| VEGF | Vascular Endothelial Growth Factor |
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