腺样囊性癌是一种罕见的外耳道恶性肿瘤。我科遇到1例，现报道如下。患者，女，35岁，因3年前发现右外耳道肿物堵塞伴疼痛，曾在门诊作肿块切除治疗。3年来疼痛反复发作。于近日在门诊作肿块切除术。病理检查：肿块为25cm×15cm×1.5cm，灰白色，质实较均匀，有包膜。镜下见基 Adenoid cystic carcinoma is a rare external auditory canal malignancy. I met 1 case, now reported as follows. The patient, female, 35 years old, was diagnosed with mass removal of the right external auditory canal 3 years ago with blockage and pain. 3 years of recurrent pain. Recently in the clinic for tumor resection. Pathological examination: mass 25cm × 15cm × 1.5cm, gray, more uniform texture, enveloped. See the mirror under the microscope