Stage IIIA Colorectal Neuroendocrine Tumor AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage IIIA includes: T4, N0, M0. T4: Tumor invades the visceral peritoneum (serosa), or other organs or adjacent structures. N0: No involvement of regional lymph node(s). M0: No distant metastasis. (AJCC 9th ed.)