放疗是利用射线照射来治疗恶性肿瘤的一种方法。放疗在杀灭肿瘤细胞的同时,也不可避免地会对身体的正常组织造成一定伤害。接受放疗的患者常会出现不同程度的局部皮肤和相应部位的黏膜损伤以及全身性反应,如头颈部放疗引起的味觉和嗅觉减退,咀嚼、吞咽困难,口腔 Radiotherapy is a method of using radiation to treat malignant tumors. When radiotherapy kills tumor cells, it will inevitably cause some damage to the normal tissues of the body. Patients undergoing radiotherapy often have varying degrees of local skin and mucosal damage at the site and systemic reactions such as loss of taste and smell caused by head and neck radiotherapy, chewing, difficulty swallowing, and oral cavity