肾上腺节细胞神经瘤的MRI诊断

MRI diagnosis of adrenal ganglioneuroma

  • 摘要: 目的 评估MRI诊断肾上腺节细胞神经瘤的价值。方法 回顾性分析7例经手术病理证实为节细胞神经瘤的MRI表现与术前诊断。结果 7例肿瘤中术前诊断良性肿瘤6例,其中神经源性肿瘤4例,节细胞神经瘤2例;恶性肿瘤1例。5例肿瘤T2WI呈不均匀高信号,内均见曲线形、线形或斑片状低信号灶,1例呈中等高信号,1例呈等和少许高信号;5例肿瘤T1WI呈均匀低信号,2例呈不均匀稍低和等信号;动态增强扫描5例病灶动脉期未见强化,实质期不均匀轻度强化,延迟期进一步强化;2例动脉期呈不均匀轻度强化,实质期及延迟期呈渐进性不均匀轻至中度强化。结论 MRI能显示肾上腺节细胞瘤的特征性表现。

     

    Abstract: Objective To evaluate the diagnostic value of MR imaging for adrenal ganglioneuroma. Methods MR imaging features and preoperative diagnosis of 7 patients with pathologically-proved ganglioneuroma were retrospectively analyzed. Results Of the 7 patients,6 were diagnosed as benign tumor(neurogenic tumor in 4 patients and ganglioneuroma in 2 patients,respectively) and 1 as malignant tumor.Heterogeneous hyper-intensity signals with a linear or patchy hypointensity inside,moderate hyper-intensity signals,and iso-or hypo-intensity signals were found on T2WI in 5,1,and 1 patient,respectively.Homogeneous hyper-intensity signals and heterogeneous or iso-intensity signals were found on T1WI in 5 and 2 patients,respectively.Dynamic enhancement scanning showed no enhancement on arterial phase image in 5 patients,but mild heterogeneous enhancement on parenchymal phase image in 2 patients,and progressive enhancement on delayed image. Conclusion MR imaging can reveal the characteristics of adrenal ganglioneuroma.

     

/

返回文章
返回