1. Neuroblastoma is a disease that may concern the orthopaedic surgeon closely.

2. Six such cases are reported.

3. Early diagnosis may be difficult, but can be achieved if the condition is suspected and an adequate investigation is carried out on suspicion alone.

4. The prognosis in these patients is still poor, but might be improved by a vigorous combination of surgery, irradiation and chemotherapy. The recent advance in treatment with vitamin B 12 may improve the prognosis substantially.