甲状旁腺腺瘤的MR检查（附4例报告）

目的：报告４例甲状旁腺腺瘤的ＭＲ表现，结合文献评估ＭＲ检查对甲状旁腺腺瘤的诊断价值。材料与方法：４例原发性甲状旁腺机能亢进病人进行了ＭＲ检查，男、女各２例，年龄１８￣３５岁。检查用ＧＥ Ｓｉｇｎａ １．５Ｔ ＭＲ成像系统。４例均经病理证实为甲状旁腺腺瘤。结果：３例腺瘤在Ｔ１ＷＩ上呈低信号，Ｔ２ＷＩ上为高信号；另１例在Ｔ１ＷＩ和Ｔ２ＷＩ上显示信号不均，内有多发类似或高于脂肪信号区，病例检查为坏死部分

MR Imaging of Parathyroid Adenoma:Report of 4 Cases

Objective: To report MR appearances of 4 cases with parathyroid adenoma and evaluate the MR diagnostic value of localization in parathyroid adenoma with review of literatures. Materials and Methods: 4 patients (2 women, 2 men), ranging in age 18 to 35 years, with primary hyperparathyroidsm underwent MR imaging, which was performed with a Signa MR system operating at 1.5 T. Parathyroid adenoma was proved histologically in all patients.Results:Three adenomas were low signal intensity on T 1WI, and high signal intensity on T 2WI. The remainder one adenoma was heterogeneous with focal areas of signal equal or greater than to the intensity of fat on T 1WI and T 2WI, which represented histologically necrotic composition. Conclusion: MR is an effective imaging technique for the diagnosis of parathyroid adenoma, and is true in mediastinal ectopic parathyroid adenoma. Parathyroid adenomas vary in their MR signal intensity which corresponds at least in part to histologic differences.