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目的探讨甲状旁腺腺瘤的MRI表现特点。方法40例经手术病理证实的病例进行MRI平扫及增强扫描。结果肿瘤常见于颈下部气管食管隐窝区,颈动脉鞘内侧,也可位于上纵隔;呈卵圆型,有完整的包膜。可出现坏死、液化及囊性变;MRI表现T1WI呈等、等高及等低信号,T2WI上呈高信号,坏死、囊变区信号明显增高,增强扫描后肿瘤明显强化。结论MRI具有较高的软组织分辨能力及三维、多参数成像功能,对甲状旁腺腺瘤的诊断更具优越性、敏感性和准确性。
Objective To investigate the MRI features of parathyroid adenoma. Methods Forty patients with pathologically confirmed cases underwent MRI plain scan and enhanced scan. Results The tumor was common in the lower part of the neck tracheal esophageal recess, carotid sheath inside, can also be located in the mediastinum; oval-shaped, with a complete envelope. There was necrosis, liquefaction and cystic degeneration. MRI showed T1WI was equal, contour and low signal, T2WI showed high signal, necrosis, cystic area signal was significantly increased after enhanced scan the tumor was significantly enhanced. Conclusion MRI has high ability of soft tissue discrimination and three-dimensional, multi-parameter imaging, diagnosis of parathyroid adenoma more superiority, sensitivity and accuracy.