【摘要】 鼻咽癌（nasopharyngeal carcinoma,NPC）在是一种相对罕见的疾病，具有独特的地理分布，但其在东南亚地区是高发恶性肿瘤。鼻咽癌大部分为低分化鳞癌（98%），首选放射治疗，而放化疗被认为具有双重性，既能治癌，又能致癌。头颈部癌症在放疗后发生放射性颌骨坏死的概率在1%～3%，且主要发生于下颌骨。本文报告1例鼻咽癌放化疗后相继发生左侧舌鳞状细胞癌、口咽癌以及下颌牙龈癌，并在牙龈癌术后发生放射性颌骨骨髓炎的病例，结合文献复习，对其病史、临床表现、治疗和预后进行讨论。更多还原

【Abstract】 Nasopharyngeal carcinoma(NPC) is a relatively rare disease in the world, with a unique geographical distribution, but high incidence in Southeast Asia. Nasopharyngeal carcinoma is mostly poorly differentiated squamous cell car-cinoma(98%) and radiotherapy is the first choice of treatment. Radiotherapy and chemotherapy have been considered to have a duality, which can treat cancer and cause cancer. The probability of radionecrosis of the jaw after radiotherapy for head and neck cancer is 1%-3%, mainly occurring in the mandible. This paper reported a case of left tongue squamous cell carcinoma, left oropharyngeal carcinoma and left lower gingival carcinoma after radiotherapy and chemotherapy for nasopharyngeal carcinoma, and the occurrence of radiation osteomyelitis of the jaw. The history, clinical manifestations,treatment and prognosis of this case were discussed based on reviewing the literature.更多还原