Long term follow-up suggests 30-40 per cent of "early" cases are "cured" by treatment. The proportion cured is probably related to the biological characteristics of the tumour rather than to the primary treatment. Careful staging is the best prognostic indicator available at present. Efforts should be made to learn more about the behaviour of tumours and to continue long term follow up.
长期随访表明，30%至40%的“早期”病例通过治疗可“治愈”。治愈比例可能与肿瘤的生物学特性有关，而非与初始治疗相关。仔细分期是目前可用的最佳预后指标。应努力更多地了解肿瘤的行为，并持续进行长期随访。
