What is the most common soft-tissue sarcoma in children?

What is the most common soft-tissue sarcoma in children?

• A. Rhabdomyosarcoma
• B. Ewing Sarcoma
• C. Liposarcoma
• D. Synovial Sarcoma

Answer: (A)

Rhabdomyosarcoma is the most common soft-tissue sarcoma in children because it originates from skeletal muscle lineage and predominantly affects the pediatric population. In kids, embryonal and alveolar subtypes are the main histologies, with embryonal being especially frequent in younger children and generally associated with a better prognosis. Other tumors listed—Ewing sarcoma, liposarcoma, and synovial sarcoma—do occur in children but are much less common as soft-tissue sarcomas in this age group (Ewing more often involves bone or extraskeletal sites; liposarcoma and synovial sarcoma are relatively rare in children). Thus, rhabdomyosarcoma best fits the question as the most common pediatric soft-tissue sarcoma.