Phase II Study of Combined Chemotherapy With Arsenic Trioxide in Stage 4/M Neuroblastoma

Arsenic trioxide（ATO） is administered 0.16mg/kg per day over eight hours IV daily for ten days. Patients will receive ATO alone on days 1-2 and combined with conventional induction chemotherapy on days 3-10. Nine cycles at most of ATO-combined chemotherapy were applied in the whole scheme.