腮腺及咽旁间隙肿瘤中,绝大多数为多形性腺瘤。目前对手术切除范围和术后放疗的价值尚有不同意见。由于肿瘤包膜不完整(假包膜),单纯剜除肿瘤是不可取的手术方法,术后复发率可达48％。过去,为了提高肿瘤剜除术后的局部控制率,术后常配合放射治疗,但仍有1.3％～2.7％的患者局部复发。此类患者的放 The vast majority of parotid and parapharyngeal space tumors are pleomorphic adenomas. There are currently differing opinions on the scope of surgical resection and the value of postoperative radiotherapy. As the tumor capsule is incomplete (pseudocapsule), simply eliminating the tumor is an undesirable surgical method, and the recurrence rate can reach 48%. In the past, in order to increase the local control rate after tumor removal, radiotherapy was often used after surgery, but local recurrence was still present in 1.3% to 2.7% of patients. Placement of such patients