Preferred Label : Stage 0 Esophageal Cancer AJCC v7;
NCIt synonyms : Esophageal Carcinoma in situ AJCC v7; Severe Esophageal Dysplasia AJCC v7; Severe Esophageal Dysplasia; Esophageal Carcinoma in situ; Stage 0 Esophageal Cancer;
NCIt related terms : stage 0 esophageal carcinoma in situ; Carcinoma in situ of esophagus;
NCIt definition : Stage 0 includes: For squamous cell carcinoma: Tis (HGD), N0, M0, G1, GX, Tumor location:
Any. For adenocarcinoma: Tis (HGD), N0, M0, G1, GX. 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.);
Alternative definition : NCI-GLOSS: Abnormal cells are found in the innermost layer of tissue lining the esophagus.
These abnormal cells may become cancer and spread into nearby normal tissue.;