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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ＧＥＳｉｇｎａ１．５ＴＭＲ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，病理检查为坏死部分。结论：ＭＲ是诊断甲状旁腺腺瘤有效检查方法，尤其是对纵隔内异位甲状旁腺腺瘤。甲状旁腺腺瘤具有不同的ＭＲ信号，这一表现至少在一定程度上与组织学差异有关。
OBJECTIVE: To report the MR manifestations of parathyroid adenoma in 4 cases and to evaluate the diagnostic value of MR examination for parathyroid adenoma. Materials and Methods: Four patients with primary hyperparathyroidism underwent MR examination, 2 males and 2 females, aged 18 to 35 years. Check the GE Signa 1.5TMR imaging system. All 4 cases were confirmed pathologically as parathyroid adenomas. RESULTS: 3 cases of adenoma showed low signal on T1WI and high signal on T2WI. The other one showed uneven signal on T1WI and T2WI. There were multiple similar or higher fat signal areas within the adenoma. The pathological examination was necrotic. Conclusion: MR is an effective method for the diagnosis of parathyroid adenomas, especially for ectopic parathyroid adenoma in the mediastinum. Parathyroid adenomas have different MR signals and this performance is at least to some extent related to histological differences.