Excision of a haemophilic pseudotumour of the ilium, complicated by fistulation.

We report the case of a patient with a haemophilic pseudotumour of the ilium who developed chronic fistulation, 6 months after en-bloc resection. During the initial resection, the large defect in the iliac wing was filled with bone cement, which may have contributed to fistula formation. A second surgical procedure consisted of excision of the fistula and bone cement and the dead space was obliterated by bringing the gluteus medius muscle into the defect. The fistula recurred, however. Reexcision of the fistula and obliteration of the dead space by a pedicled rectus abdominis muscle flap resulted in eradication of the fistula. We emphasize the importance of obliteration of dead space, resulting from large pseudotumour resection. The use of bone cement is not advocated. If a fistula does occur, a pedicled rectus abdominis muscle flap may be considered.