NCIt synonyms : Esophageal Squamous Cell Carcinoma in situ; Esophagus Squamous Cell Carcinoma in situ; Stage 0 Squamous Cell Carcinoma of Esophagus; Esophageal Squamous Cell Carcinoma Stage 0; Stage 0 Esophagus Squamous Cell Carcinoma; Stage 0 Squamous Cell Carcinoma of the Esophagus; Oesophageal Squamous Cell Carcinoma Stage 0; Squamous Cell Carcinoma in situ of the Esophagus; Squamous Cell Carcinoma in situ of Esophagus; Stage 0 Esophageal Squamous Cell Carcinoma;
NCIt related terms : Stage 0 Esophageal Squamous Cell Cancer;
NCIt definition : Stage 0 includes: Tis (HGD), N0, M0, G1, GX, Tumor location: Any. Tis: High-grade
dysplasia. N0: No regional lymph node metastasis. M0: No distant metastasis. G1: Well
differentiated. GX: Grade cannot be assessed-stage grouping as G1. Tumor location:
Location of the primary cancer site is defined by the position of the upper (proximal)
edge of the tumor in the esophagus. (AJCC 7th ed.);