Stage IIIB Retroperitoneal Sarcoma AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage IIIB includes: (T3, T4, N0, M0, G2, G3); (Any T, N1, M0, Any G). T3: Tumor measuring more than 10 cm and less than or equal to 15 cm in greatest dimension. T4: Tumor measuring more than 15 cm in greatest dimension. N0: No regional lymph node metastasis or unknown lymph node status. N1: Regional lymph node metastasis. M0: No distant metastasis. G2: Total differentiation, mitotic count and necrosis score of 4 or 5. G3: Total differentiation, mitotic count and necrosis score of 6, 7, or 8. (AJCC 8th ed.)

**Synonyms:** - Stage IIIB Retroperitoneal Sarcoma - Stage IIIB Soft Tissue Retroperitoneal Sarcoma AJCC v8