射线作用于机体,不仅在当时,在放射后的远期亦可出现迟发性损伤,包括产生癌。以往的报道,多系受到一次大剂量或长期小剂量放射,经过一定时间后,在一部分人员中发生白血病或受照射部位的癌变。因某种疾患(包括肿瘤)接受放射治疗,经过若干年后所发生癌变病例国内报告甚少。本文报告我院近年所遇放疗后发生癌变7例并 Radiation acts on the body, not only at the time, but also in the long-term after radiation, delayed injury, including cancer. According to previous reports, a large dose or a long-term low-dose radiation is frequently used. After a certain period of time, leukemia or a cancerous area of ​​the irradiated site occurs in some people. After receiving radiation therapy for certain diseases (including tumors), there have been few domestic reports of cancerous cases after several years. This article reports 7 cases of carcinogenesis after radiotherapy in our hospital in recent years.