摘要
目的探讨甲状旁腺腺瘤多层螺旋CT(MSCT)和MRI表现,并评估两种检查方法对甲状旁腺腺瘤诊断的价值。资料与方法回顾性分析经手术病理证实的48例甲状旁腺腺瘤的影像学资料,其中30例行CT平扫及增强检查,14例仅行CT平扫,5例行MRI平扫及CT平扫和(或)强化检查,4例仅行MRI平扫检查。结果 48例均为单发病灶,其中42例(87.5%)位于甲状腺下极气管-食管旁沟;6例(12.5%)为异位腺瘤。CT平扫,28例腺瘤呈均匀软组织密度,16例腺瘤密度不均匀,其内见低密度坏死区。MRI平扫,6例腺瘤呈均匀软组织信号,3例腺瘤内见长T2信号区。CT增强早期,30例腺瘤实体部分明显强化,但强化程度低于颈部大血管,晚期强化程度减低,但大血管强化程度的下降更为明显,两者之间的密度差逐渐减小。结论 MSCT可以清晰显示肿瘤的部位、大小、形态和质地。
Purpose To investigate the manifestations of parathyroid adenoma on Multi-slice spiral CT（MSCT） and MRI and to evaluate these two methods in diagnosing parathyroid tumor.Materials and Methods CT and MRI of 48 cases with surgery and pathology proved parathyroid adenoma were retrospectively reviewed.There were 30 cases with pain and enhanced CT scan;14 cases receiving only non-contrast CT;5 cases undergoing plain MRI scan and CT（plain and/or enhanced studies） and 4 receiving only plain MRI exam.Results All 48 cases had solitary lesion,42（87.5%） of which located in the tracheo-esophageal sulcus at the thyroid lower pole.Six（12.5%） cases were ectopic adenoma.On plain CT scan,30 cases showed homogeneous soft tissue density;whereas 16 adenomas were heterogeneous.On MRI 6 tumors showed homogeneous soft tissue signal with long T2 area in 3 cases.In early stage of contrast enhanced CT,significant enhancement was fond in 30 cases,but the density was still less than that of the blood vessels;Later the density difference between the tumor and vessels became less due to more significant decrease of vascular enhancement.Conclusions MSCT can demonstrate the location,size,shape and texture of parathyroid adenoma.It is an effective imaging method for parathyroid tumor diagnosis.
出处
《中国医学影像学杂志》
CSCD
北大核心
2011年第4期292-295,共4页
Chinese Journal of Medical Imaging
关键词
甲状旁腺肿瘤
体层摄影术
螺旋计算机
磁共振成像
Parathyroid neoplasms； Tomography,spiral computed； Magnetic resonance imaging
