在医学文献中常提到有些良性肿瘤或瘤样病变放疗后发生恶性变。我们遇到一例颊部血管瘤放疗后近10年发生肉瘤变,由于这种病例比较少见,特报道如下。病员:尉××,女,26岁,农民。病史:右面颊部肿块26年,术后复发伴疼痛5个月。出生时右面颊部肿块就有鸡蛋大,质软,色红,中央区有硬块,随年龄增大肿块缩小。5岁时跌伤后肿块增大,经抗炎治疗后又缩小至原来大小。16岁时曾作放疗20余次(总剂量不详),局部皮肤结痴,肿块有所缩小,但仍存在。近一年来因肿块增大较快伴跳动性疼痛,尚能忍受,曾行右面颊部血管瘤摘除术, In the medical literature, it is often mentioned that some benign or neoplastic lesions undergo malignancy after radiotherapy. We have encountered a case of sarcoma metastasis in the past 10 years after radiotherapy for cheek hemangiomas. This is a rare case and is reported below. Sick: 尉××, female, 26 years old, farmer. History: Right cheek mass was 26 years old, postoperative recurrence with pain for 5 months. At the time of birth, the right cheek lumps have large eggs, soft and red, and there are hard blocks in the central area, and the size of the mass decreases with age. At the age of 5, the mass increased after fall injury and was reduced to its original size after anti-inflammatory treatment. When he was 16 years old, he had undergone radiotherapy for more than 20 times (the total dose was unknown). The local skin became obnoxious and the mass was reduced, but it still existed. In the past year, because of the rapid increase in mass with beating pain, I could still endure the right cheek hemangiomas.