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![Evolution of the treatment of esophageal cancer: artificial intelligence and the role of sentinel lymph node assessment in esophageal cancer](https://image.oaes.cc/5849e2ec-15b1-4d0a-ac5e-0f1a4f890a26/ais3037.fig.1.jpg)
Figure 1. Prevalence of lymph node metastases per tumor location in patients with squamous cell carcinoma. (A) Upper thoracic esophageal tumor; (B) Middle thoracic esophageal tumor; (C) Distal thoracic esophageal tumor. Data presented as percentage of patients with lymph node metastases in this region. Reproduced with permission[13].