外耳道腺样肿瘤罕见,分类及命名长期十分紊乱,至1989年底国内共有65例报告,现将我们诊治的3例报告于后。病例报告例1:女,48岁。发现右耳道口肿块近10年,偶有疼痛,半年来听力下降。检查:右耳道口肿块直径约1cm,质地较硬,有压痛。局麻下行右耳道口肿块切除术。病理检查:肿块1.2×1×1cm,质地较硬,软骨样,有包膜,切面灰白色,部分区呈半透明状。镜下:瘤组织由粘液软骨样基质及其散布其间的上皮细胞团、索构成。瘤细胞分化 Adenoid tumors of the external auditory canal are rare, and the classification and nomenclature are very disordered for a long time. By the end of 1989, there were 65 cases reported in the country. We now report 3 cases of our treatment. Case Report Example 1: Female, 48 years old. It was found that there was occasional pain in the right ear canal for nearly 10 years, and hearing loss had decreased in the past six months. Examination: The diameter of the mass in the right ear canal is about 1cm. The texture is hard and tender. Local anesthesia underwent lumpectomy in the right ear. Pathological examination: mass 1.2 × 1 × 1cm, hard texture, cartilage-like, coated, cut surface gray, some areas were translucent. Microscopically, the tumor tissue consists of a mucinous cartilage-like matrix and its epithelial cell mass and cord interspersed with it. Tumor cell differentiation