54例大涎腺腺样囊性癌的治疗疗效和预后分析

目的 腺样囊性癌(ACC)是头颈部少见的恶性肿瘤,本研究分析大涎腺ACC的治疗疗效和预后因素.方法 回顾分析54例大涎腺ACC患者,其中腮腺24例,颌下腺或舌下腺30例.单纯手术治疗26例,术后放疗28例.放疗中位剂量为58 Gy(50～65 Gy).结果 随访率为94%,其中随访时间满5年者35例,术后放疗组和单纯手术组分别为15例和20例.全组5年总生存率为97%,5年局部区域控制率为71%,5年远处转移率为13%(7例均为肺转移),5年无瘤生存率为69%.局部区域失败15例,其中单纯手术组13例,术后放疗组2例.术后放疗组和单纯手术组5年局部区域控制率分别为90%和54%,无瘤生存率分别为85%和55%.单因素和多因素分析均显示术后放疗是影响局部区域控制和无瘤生存率的一个重要预后因素.结论 大涎腺ACC术后放疗与单纯手术相比明显提高了疗效,但远处转移较常见.

Treatment results and prognostic analysis of 54 patients with adenoid cystic carcinoma originated from the major salivary glands

Objective Adenoid cystic carcinoma (ACC), a rare malignancy in head and neck region, is predominately found in the salivary glands. Our study is to retrospectively analyze the treatment outcomes and prognostic factors of ACC originated from the major salivary glands. Methods A total of 54 patients diagnosed as ACC were treated in our institution, including 24 cases originated from the parotid gland and 30 from the submandibular or sublingual gland. According to the records, 26 patients received surgery alone and 28 were treated with surgery followed by radiotherapy with a median dose of 58 Gy (range, 50 -65 Gy). Results The Follow-up rate was 94%, and 15 patients from postoperative radiotherapy group and 20 from surgery alone group were followed up more then 5 years. The 5-year overall survival rate, local-regional control rate, distant metastasis rate, and disease-free survival rate were 97%, 71%, 13% and 69%, respectively. Lung metastasis, occurred in 7 patients, was the most common distant failure. Fifteen recurrences were observed, including 13 in surgery alone group and 2 in postoperative radiotherapy group. The 5-year local-regional control and disease-free survival rates were 90% and 85% for patients treated with postoperative radiotherapy, 54% and 55% for those treated with surgery alone. Univariate and multivariate analyses showed that postoperative radiotherapy was the only prognostic factor of local-regional control and survival rates. Other parameters such as nerve involvement did not significantly influence the treatment results. Conclusions Postoperative radiotherapy can improve the prognosis of ACC originate from the major salivary glands compared with surgery alone. Distant metastasis is an obstacle in curing the disease, which indicates the value of systemic treatment.