:〔目的〕观察20例第二原发癌患者的治疗效果。〔方法〕1992年9月～1999年1月期间,对20例经病理证实的第二原发癌进行根治性或姑息性治疗。〔结果〕20例中3例已死亡,分别生存6个月,1年,2年5个月。其余17例仍生存:已生存1年以上者11例,已生存3年以上者1例,已生存5年以上者1例。〔结论〕第二原发癌经积极治疗仍能取得一定效果。 : [Objective] To observe the curative effect of 20 cases of second primary cancer patients. [Methods] From September 1992 to January 1999, 20 cases of pathologically confirmed second primary cancer were treated with radical or palliative treatment. 〔Results〕 Three of the 20 patients died and survived for 6 months, 1 year and 2 years and 5 months respectively. The remaining 17 patients still survived: 11 patients had survived for more than 1 year, 1 patient had survived for more than 3 years, and 1 patient had survived for more than 5 years. 〔Conclusions〕 Second active cancer can still achieve some results.