What is fibrosarcoma?

A fibrosarcoma is a malignant (cancerous) tumor that originates in the connective fibrous tissue found at the ends of bones of the arm or legs, and then spreads to other surrounding soft tissues. It is a type of soft tissue tumor, a type of tissue which includes fat, muscles, tendons (bands of fiber that connect bones to muscle), nerves, joint tissue, blood vessels and other fibrous tissue. Fibrosarcoma most commonly affects either a lower leg or arm.

Infantile fibrosarcoma

Congenital fibrosarcoma, also called infantile fibrosarcoma, is a type of tumor among the most common soft tissue sarcoma found in children under one year of age. It presents as a rapidly growing mass at birth or shortly after. This form of fibrosarcoma is usually slow-growing, and tends to be more benign than fibrosarcoma in older children, which behaves more like the type found in adults.

Adult form fibrosarcoma

The adult form of this disease can occur in older children and in adolescents, roughly between the ages of 10 and 15. It is more aggressive than the infantile form and generally involves more complex treatment.

How we care for fibrosarcoma

Children with fibrosarcoma are treated at Dana-Farber/Boston Children's Cancer and Blood Disorders Center through our Bone and Soft Tissue Program. Our integrated pediatric oncology program offers the combined expertise of a leading cancer center and a world-renown children’s hospital.