Table 1: Common fibrosarcoma types.

ChildhoodAdult

1,5% of childhood malignancies0,7% of adult malignancies
Spindle shaped malignant cells often interdigitating in a “herringbone” patternSpindle shaped malignant cells often interdigitating in a “herringbone” pattern
Less aggressive More aggressive
Good prognosisPoor prognosis
Genetic alterations may be involvedGenetic alterations may be involved