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Osteosarcoma, Extraskeletal

Source: Childhood Soft Tissue Sarcoma Treatment (PDQ®)–Health Professional Version, National Cancer Institute.

Source updated: April 21, 2025 · Captured 2026-09-09.

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Context: Treatment of Chondro-osseous Tumors

Extraskeletal osteosarcoma is extremely rare in the pediatric and adolescent population. Osseous and chondromatous neoplasms account for 0.8% of soft tissue sarcomas in patients younger than 20 years (see Table 1).

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Table 1

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Genomic alterations →Prognostic factors and prognosis →Treatment of extraskeletal osteosarcoma →

Preserved source evidence · Not medical advice