腮腺基底细胞腺瘤的CT诊断价值

The value of CT in the diagnosis of parotid basal cell tumor

目的:探讨腮腺基底细胞腺瘤的CT表现特征。方法:回顾性分析经手术和病理证实的9例腮腺基底细胞腺瘤的临床和CT检查资料。结果:9例均为单发肿瘤,位于腮腺浅叶,紧邻包膜下。CT平扫肿瘤呈类圆形7例,长椭圆形伴浅分叶2例,边缘清晰,直径多<3cm,4例肿瘤内见囊变;CT增强扫描实质部分动脉期呈显著强化,静脉期强化程度接近或稍低于动脉期,密度相对较均匀。结论:腮腺基底细胞腺瘤的CT表现具有一定的特征性,结合其临床特点有助于其术前定性诊断。

Objective:To review CT imaging features of basal cell tumor in parotid gland and explore its diagnostic value.Methods:The clinical materials and image findings of 9 cases of parotid basal cell tumor which proved by pathology were retrospectively studied.Results:9 patients suffered from solitary tumor locating in the superficial lobe on the capsule of the gland.7 tumors appeared as round and 2 tumors appeared as lobulated,all cases less than 3 cm in diameter and with smooth contours.4 cases showed cystic areas in the center.At arterial phase,the tumors showed a strong enhancement.At venous phase,the tumors showed a pattern of persistent strong enhancement,the increase of CT values were similar to the arterial phase.Conclusion:The qualitative diagnosis of the parotid basal cell adenoma could be made based on the CT findings combined with some valuable clinical information before operation.