Bone Cancer Stage III (Metastatic at Diagnosis)
Reviewed by Oncology Team, VICI Healthcare | Last updated: 2026-04
What Stage III (Metastatic at Diagnosis) Means
Distant metastases present, typically pulmonary (30-40% at diagnosis). May have single or multiple lung nodules; bone or other visceral metastases possible.
Treatment Approach for Stage III (Metastatic at Diagnosis)
Intensive multiagent neoadjuvant chemotherapy (osteosarcoma: MAP with possible intensification; Ewing sarcoma: VIDE or alternating VAC/IE). Assessment for metastatectomy after chemotherapy response. Primary tumor resection if feasible. Adjuvant chemotherapy and consideration of thoracic surgery for pulmonary nodules.
Survival Rates and Prognosis
The 5-year survival rate for bone cancer at Stage III (Metastatic at Diagnosis) is approximately 5-year survival 20-50% (historically poor, improving with aggressive multiagent chemotherapy and metastatectomy protocols). Prognosis depends on number, size, and resectability of metastases.. Survival rates are statistical averages drawn from large patient populations and may not reflect your individual outcome. Factors that influence your specific prognosis include your age, overall health, tumour biology, and how well the cancer responds to treatment.
Important: These numbers are drawn from historical data. Newer treatments available today may improve outcomes beyond what published statistics show. Discuss your individual prognosis with your oncologist.
How Other Stages Compare
| Stage | 5-Year Survival | Treatment |
|---|---|---|
| Stage IA (Enneking I, intracompartmental) | 5-year survival 90%+ (rarely reached in aggressive tumors like osteosarcoma or Ewing sarcoma; more common in giant cell tumors and low-grade chondrosarcoma). | Surgical resection with wide margins (limb-salvage surgery). Adjuvant… |
| Stage IB (Enneking II, extracompartmental) | 5-year survival 60-75% with multimodal therapy (chemotherapy + surgery for osteosarcoma/Ewing sarcoma). | Neoadjuvant chemotherapy (MAP protocol for osteosarcoma; VIDE/VAC or similar… |
| Recurrent Disease | 5-year survival 10-30% depending on site and timing of recurrence. Early recurrence (within 1-2 years) indicates aggressive biology; late recurrence may respond to re-treatment. | Re-staging and assessment of chemotherapy sensitivity. Options include… |
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Diagnosed with Stage III (Metastatic at Diagnosis) Bone Cancer?
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