Stage III Ampulla of Vater Neuroendocrine Tumor AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage III includes: (T4, N0, M0); (Any T, N1, M0). T4: Tumor invading the visceral peritoneum (serosa) or other organs. N0: No regional lymph node metastasis. N1: Regional lymph node metastasis. M0: No distant metastasis. (AJCC 8th ed.)

**Synonyms:** - Stage III Ampulla of Vater Neuroendocrine Tumor