Fatal pulmonary embolism due to osteogenic sarcoma in a child.

A case of fatal pulmonary embolus in a 9-year-old child is presented, in which there is an unusual underlying cause. Whilst pulmonary embolism is rare in childhood, it must be considered when the clinical and radiological circumstances are appropriate. Extensive thrombosis of the lower limbs can occur without clinical signs and the value of venography is emphasised.