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![Radiological assessment of extranodal extension in patients with head and neck squamous cell carcinoma](https://image.oaes.cc/859f6cfc-16be-4f6e-b3e7-847f2f934a70/4296.fig.1.jpg)
Figure 1. Examples of ENE measurement on hematoxylin-eosin-stained tissue samples of patients with HNSCC: (A) ENE < 2 mm with a small area of capsular disruption and a few malignant cells in the adjacent stroma (arrow); and (B) ENE > 2 mm (circle) as measured from the virtual external capsule border (C) to the farthest extend of the tumor (T).