Pathologic Stage IC Gastroesophageal Junction Adenocarcinoma AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage IC includes: (T1, N0, M0, G3); (T2, N0, M0, G1-2). T1: Tumor invades the lamina propria, muscularis mucosae, or submucosa. T2: Tumor invades the muscularis propria. N0: No regional lymph node metastasis. M0: No distant metastasis. G1: Well-differentiated. G2: Moderately differentiated. G3: Poorly differentiated, undifferentiated. (AJCC 8th ed.)