外耳道腺样囊性癌临床分析

目的 探讨外耳道腺样囊性癌的治疗方法与影响预后的相关因素.方法 对解放军总医院耳鼻咽喉头颈外科医院1988--2004年收治的19例外耳道腺样囊性癌患者的临床资料进行分析.依据Pittsburgh外耳道癌分类法,T1期5例,T2期2例,T3期6例,T4期6例.T1和,12期病例行局部切除,T3和T4期病例行乳突根治术或颞骨切除术.术后予以足量放疗.复发病例伴远处转移单灶者行手术治疗,远处多灶转移者行放疗.结果 19例病例术后随访时间6个月～19年,随访时间中位数44个月,随访5年以上者8例.12例复发,7例远处转移,4例死亡.初次切缘肿瘤细胞阳性的4例患者足量放疗后全部复发.复发患者有9例进行了2次以上手术治疗,8例进行了3次以上手术治疗,4例进行了4次手术治疗.结论 外耳道腺样囊性癌起病隐匿,易复发,可长期带瘤生存.首次手术应扩大切除范围,确保切缘肿瘤细胞阴性.术后辅以足量放疗.复发病例可多次手术治疗,延长生存期.多次局部复发后易发生远处转移.远处转移是主要死亡原因.

Clinical analysis of adenoid cystic carcinoma of external auditory canal

Objective To explore methods of treatment for adenoid cystic carcinoma of external auditory canal, and discuss the correlating factors that effect prognosis. Methods A retrospective analysis of 19 cases of adenoid cystic carcinoma of external auditory canal treated from 1988 to 2004 was carried out. Based on University of Pittsburgh TNM staging system of external auditory canal carcinoma, 19 cases were classified into groups as 5 cases in T1, 2 in T2, 6 in T3, and 6 in T4. Local resection was performed in cases in stage T1 and T2, while radical mastoidectomy or temporal bone resection was performed in stage T3 and T4. Radiotherapy was applied after operation. Relapsed cases with isolated metastasis were treated by surgery. Multiple metastasis were treated with radiotherapy. Results The follow-up time is from 6 months to 19 years, and the median is 44 months. There're 8 cases with more than 5 years' follow-up. Twelve patients relapsed and 7 had metastasis but 4 died. The cases with positive incisal edge after first operation relapsed even treated with radiotherapy. In recurrent cases, 9 cases received more than 2 operations, 8 more than 3, and 4 received 4 operations. Conclusions The adenoid cystic carcinoma of external auditory canal grows insidiously, and relapses frequently. But the patients can live long with neoplasm implanted. A wide surgical excision combined with post operative radiotherapy was proposed, and negative incision edge should be confirmed. Recurrent cases can be treated with several operations to elongate survival. Multiple relapses will cause metastasis more frequently. Metastasis is the main reason to cause death.