CT和MR诊断腮腺基底细胞腺瘤的临床价值

Clinical characteristics of CT and MR in the diagnosis of parotid basal cell adenoma

目的探讨CT和MR检查诊断腮腺基底细胞腺瘤的临床价值。方法随机选取2015年1月至2018年12月的腮腺基底细胞腺瘤患者20例,腮腺多形性腺瘤44例,腮腺腺淋巴瘤26例。观察CT和MR检查平扫和强化扫描的图像特点。结果 20例腮腺基底细胞腺瘤均为单发,直径(25.25±7.64)mm;肿瘤发生在右侧11例,左侧9例;深叶7例,浅叶13例。所有病灶边缘较为光滑,多为椭圆形或者圆形。CT检查结果显示:10例腮腺基底细胞腺瘤显示为高密度,CT值为(31.14±8.73)HU,强化幅度(72.53±13.09)HU。MR检查T1W1多为低信号,T2W1呈现稍高信号,T2 SPAIR有低信号包膜,增强扫描表现为延迟强化,且强化不均。结论腮腺基底细胞腺瘤的CT和MR图像特征较为明显,可以为临床诊断提供可靠依据。

Objective To investigate the clinical features of CT and MR in diagnosis of parotid basal cell adenoma.Methods From January 2015 to December 2018,20 patients with parotid basal cell adenoma,44 patients with parotid pleomorphic adenoma and 26 patients with parotid lymphoma were randomly selected.The image characteristics of plain and enhanced CT and MR scans were observed.Results Twenty cases of parotid basal cell adenomas were solitary,with a diameter of(25.25±7.64)mm.The tumors occurred in 11 cases on the right,9 cases on the left,7 cases on the deep and 13 cases on the shallow.All lesions had smooth margins,mostly elliptical or circular.CT findings showed that 10 cases of parotid basal cell adenoma showed high density,CT value was(31.14±8.73)HU,enhancement range was(72.53±13.09)HU.MR examination showed that T1 W1 was low signal,T2 W1 was slightly high signal,T2 SPAIR had low signal envelope,enhanced scan showed delayed enhancement and uneven enhancement.Conclusions CT and MR imaging features of parotid basal cell adenoma are obvious,which can provide reliable basis for clinical diagnosis.