发生在涎腺的基底细胞腺瘤,根据肿瘤细胞排列方式的不同,通常将其分为4种类型,即实性、梁状、管状和膜性结构,其中可间杂有局域性的筛状结构。同一肿瘤中可以有一种以上的排列方式,通常以一种类型为主,而以筛状结构为主者十分少见[1-2],国内文献中未见报道。它极易与筛状型腺样囊性癌相混淆,尤其在冰冻切片检查中,由于取材的局限性,在显微镜下常常只见典型的筛 Basal cell adenomas, which occur in the salivary glands, are usually classified into four types according to the arrangement of the tumor cells: solid, beam, tube, and membranous structures, among which there may be localized scree structure. There can be more than one type of arrangement in the same tumor, usually one type, while the most common type is sieve-like structure [1-2], which has not been reported in the domestic literature. It is easily confused with the pleomorphic adenoid cystic carcinoma, especially in the frozen section examination, due to the limitations of drawing, under the microscope often see only a typical sieve