小细胞未分化肺癌(简称SCLC)对放化疗的敏感性与其它类型肺癌不同。通常采用3～4种化疗药物联合应用并加胸部放疗,对局限期病例可提高生存率,广泛期病例可有较好的姑息作用。近年来,国内外很多学者对局限期和广泛期Sclc治疗中胸部照射的作用,预防性全脑照射,大面积照射是否必要进行了探讨,期望能够提高疗效。 The sensitivity of small cell undifferentiated lung cancer (abbreviated as SCLC) to radiochemotherapy is different from that of other types of lung cancer. Usually 3 to 4 chemotherapeutic agents are used in combination with thoracic radiotherapy, which can improve the survival rate in patients with limited period, and may have good palliative effect in extensive cases. In recent years, many scholars at home and abroad have explored the role of chest irradiation in limited-term and extensive-stage Sclc treatment, preventive whole-brain irradiation, and whether large area irradiation is necessary.