For initial stages, esophagectomy, and tumor resection are sufficient.

对于早期食管癌，食管肿瘤已足够。

For initial stages, when the cancer has invaded just the mucosa and submucosa, options include esophagectomy, endoscopic tumor resection, or mucosal ablation - which is when the cancerous mucosa is removed by radiofrequency.

早期肿瘤只入下层，治疗选择包括食管术、内镜下肿瘤术或融术，即用射频融被肿瘤袭的。