NCIt related terms : Stage IVA Esophageal Squamous Cell Cancer;
NCIt definition : Stage IVA includes: (T4, N0-2, M0); (Any T, N3, M0). T4: Tumor invades adjacent structures.
N0: No regional lymph node metastasis. N1: Tumor with metastasis in one or two regional
lymph nodes. N2: Tumor with metastasis in three to six regional lymph nodes. N3: Tumor
with metastasis in seven or more regional lymph nodes. M0: No distant metastasis.
(AJCC 8th ed.);