垂体转移瘤的MRI诊断

目的探讨垂体转移瘤的磁共振成像特征。方法回顾性分析9例经病理或临床随访证实的垂体转移瘤的磁共振影像资料,寻找其特征性表现。结果 MR影像均显示转移瘤位于垂体后叶或垂体柄,呈浸润性生长,T1WI多呈低信号,T2WI多呈略高信号,其内信号不均匀。增强检查病灶呈明显不均匀强化。结论 MRI对诊断垂体转移瘤有特征性,对垂体转移瘤的诊断及鉴别诊断有重要的参考价值。

Objective To investigate the MRI features of pituitary metastasis. Methods The MR manifestation of 9 cases of pituitary metastasis proven by pathological check and confirmed by following-up observation was analyzed retrospectively. The distribution and extent of lesion was assessed. Results MR/displayed that pituitary metastases were located in the posterior lobe or pituitary stalk and showed infiltrative growth patterns. T jWI signal exhibited hypointensity signals and T2WI presented hyperdensity signals. The signals were inhomogeneous. And the enhanced scanned lesions had moderate and apparent inhomogenous enhancement. Conclusion The MR/imaging of pituitary metastases had certain features. MRI had important values for the diagnosis and differentiation diagnosis of pituitary metastases.