Stage III Osteosarcoma AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** Stage III includes: T3, N0, M0, G3, G4. T3: Tumor more than 8 cm in greatest dimension. N0: No regional lymph node metastasis. M0: No distant metastasis. G3: Poorly differentiated. G4: Undifferentiated. (AJCC 7th ed.)

**Synonyms:** - Stage III Osteogenic Sarcoma - Stage III Osteosarcoma