The weight of the tumor was 999.5g (Fig.2). An imaging two and three months after resection showed a small (1cm) residual lesion between metacarpale I and metacarpale II, which could be resected with acceptable margins (0.3cm, 0.2cm and 0.5cm). This was only possible by taking along the periosteum of metacarpale II, the periosteum and part of the base of metacarpale I, part of the M. adductor and the tendon sheaths of the extensor tendons D1 and motor function, blood circulation and sensitivity were again unimpaired postoperatively.