Multifocal pseudotumour in a single limb

A 13-year-old boy with severe haemophilia presented at the National Centre with gross swelling of his foot and infrapatella area, and reported that several months previously he had kicked a football and had instantly developed a bleed in his foot. Despite replacement factor the swelling failed to subside. He had ambulated for a while using crutches and when he eventually presented himself the X-rays revealed two separate pseudotumours. The patient underwent a transfemoral amputation.