腮腺基底细胞腺瘤的CT特征

目的:探讨腮腺基底细胞腺瘤的CT特征,为该病的临床诊断提供参考依据。方法:收集9例经临床手术及病理学证实确诊为腮腺基底细胞腺瘤患者的CT资料,回顾性分析其CT平扫和双期增强扫描表现。结果:9例患者共计10个病灶,其中1例为单侧2个病灶,其余8例均为单侧单发病灶。8个病灶位于腮腺浅叶,1个病灶跨深浅叶,单侧2个病灶中1个病灶位于深叶。10个病灶中,直径小于3 cm的病灶有8个,平均直径为2 cm。9个病灶呈圆形或椭圆形,边界清晰;1个病灶呈浅分叶状,边界欠清。10个病灶中有6个为实性病灶,4个为囊实性病灶。8个病灶的实性成分在动脉期明显强化,达到峰值。静脉期其中6个病灶呈持续性强化或稍有减退。结论:腮腺基底细胞腺瘤多发于腮腺浅叶部,多单发且体积较小,边界清晰,易囊变。其内血管结构丰富,实性成分强化较明显,应用双期增强扫描时,大多数呈现出"快进慢出"强化特征。

The CT characteristics of the basal cell adenoma of the parotid gland

Objective:To explore the CT characteristics of basal cell adenoma of the parotid gland,in order to improve the evidence for the clinical diagnosis of the disease.Methods:The CT images of 9 cases of surgically and pathologically confirmed parotid basal cell adenoma were retrospectively analyzed and all cases underwent CT plain scan and dual phase enhanced scan.Results:A total of 10 lesions including 1 case was multiple with 2 lesions,and other cases of basal cell adenoma were single lesion.8 lesions located in the superficial lobe of parotid gland,1 lesion across the superficial and deep lobes,1 lesion in one of the 2 lesions located in the deep lobe.Of the 10 lesions,8 lesions were less than 3 cm in diameter,the average diameter is 2 cm.9 lesions were round,oval,and had clear boundary.One lesion was small lobulated with rough edge and unclear boundary.The 6 lesions were solid,and the 4 lesions were cystic.The solid components of the 8 lesions were obviously enhanced in the arterial phase,which reached the peak value,and the 6 lesions in the venous phase showed continuous enhancement or slight decrease.Conclusion:Basal cell adenoma of the parotid gland often occurs in superficial lobe of parotid gland and mostly displayed solitary,small,cystic degenaration with clear boundary.The structure of blood vessels is rich,and the strengthening of the real components is obvious.When the double phase enhanced scanning is used,most of them show the characteristics of "fast forward and slow out".