label: Stage IV Esophageal Squamous Cell Carcinoma AJCC v7
label_lc: stage iv esophageal squamous cell carcinoma ajcc v7
description: Stage IV includes: Any T, Any N, M1, Any G, Tumor location: Any.  M1: Distant metastasis.  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.)