| LVI | Lymphovascular invasion |
| L | Lymphatic invasion (TNM) |
| V | Venous invasion (TNM) |
| Pn | Perineural invasion (TNM) |
| NV | Neurovascular-unit composite score |
| SCC | Squamous cell carcinoma |
| CD31 | Platelet endothelial cell adhesion molecule-1 (PECAM-1) |
| NSE | Neuron-specific enolase |
| KR-20 | Kuder–Richardson formula 20 |
| HE | Hematoxylin–eosin |
| IHC | Immunohistochemistry |
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