preferred_name: Stage 0 Esophageal Squamous Cell Carcinoma AJCC v7
preferred_name_lc: stage 0 esophageal squamous cell carcinoma ajcc v7
label: Stage 0 Esophageal Squamous Cell Carcinoma AJCC v7
label_lc: stage 0 esophageal squamous cell carcinoma ajcc v7