NCIt related terms : Stage IIA Esophageal Adenocarcinoma;
NCIt definition : Stage IIA includes: T1, N1, M0. T1: Tumor invades the lamina propria, muscularis mucosae,
or submucosa. N1: Tumor with metastasis in one or two regional lymph nodes. M0: No
distant metastasis. (AJCC 8th ed.);