The aim of cancer therapy in childhood is to achieve a lasting cure without physical and psychosocial harm and, preferably, at a low financial cost. Although cure is possible in many types of childhood cancer, this is often accompanied by complications as a consequence of intensive therapy. These late effects primarily affect fertility, the cardio-respiratory and endocrinological systems. Psychosocial adverse effects may have serious implications on the marriage and employment prospects of those patients surviving into adulthood. Furthermore, the risk of treatment-induced, secondary malignancies may increase as survival improves. With current intensive chemotherapy and radiotherapy, the attainment of cure rates in (EXC)ess of 60-70% is, inevitably, associated with significant morbidity. Indeed, recent developments in cancer therapy have focused on ways of reducing this morbidity, whilst still maintaining the overall improvement in survival.peer-reviewe