血管外皮瘤的CT和MR诊断  

CT and MRI Diagnosis of Hemangiopericytoma

作　　者：李双生[1] 邱晓晖[1] 张建魁[1] 耿旭影[1] 牛鹏飞[1] 

机构地区：[1]安徽省亳州市人民医院影像科,安徽亳州236800

出　　处：《中国CT和MRI杂志》2014年第4期104-106,共3页Chinese Journal of CT and MRI

摘　　要：目的探讨血管外皮瘤的CT和MRI表现。方法 1例进行上腹部CT及MRI扫描;5例行MRI扫描,并回顾性分析6例经组织学证实的血管外皮瘤的CT及MRI表现。结果 4例血管外皮瘤位于颅内,1例发生于颈椎椎管,1例发生于肝脏。CT及MRI表现:1例肝脏血管外皮瘤CT平扫为类圆形稍低密度,其MR平扫表现为边界模糊的稍长T1长T2信号,增强后均显示均匀显著强化;4例颅内脑外血管外皮瘤及1例颈椎椎间孔血管外皮瘤MRI表现:与脑灰质比较,病灶均呈类圆形等T1、等T2信号;增强后均显著均匀强化。结论 1例肝脏血管外皮瘤CT和MRI增强后显著强化,强化时间持续7分钟以上是肝血管外皮瘤较典型的影像表现,颈部及颅内血管外皮瘤MRI平扫为稍长T1稍长T2信号;增强后持续均匀强化。Objective To investigate the CT and MRI features of the hemangiopericytoma. Methods One patient underwent an abdominal helical CT scan and abdominal MRI scan,five of them only underwent MRI scan.The CT and MRI findings of six patients with histologically proved hemangiopericytoma were retrospectively reviewed. Results Hepatic hemangiopericytmna were slightly hypodense on plain CT.The lesions demonstrated slightly long T1 long T2 signal with ill defined border on plain MR , and had evident and homogeneous enhancement On post-contrast CT and MRI scan. The lesions were from the endocranium in 4 cases, the Cervical spinal canal in 1cases. On MR TlWI and T2WI, hemangiopericytomas from the endocranium and the Cervical spinal canal were isointense to gray matter with defined border.and showed marked homogeneous contrast enhancement. Conclusions Marked homogeneous enhancement of hepatic hemangiopericytmna in 1 case on post-contrast CT and MRI scan, more than 7 minutes＇ contrast delay is typical manifestations of hemangiopericytoma of liver. Hemangiopericytmna from the endocranium and the Cervical spinal canal demonstrated iso-T1 and iso-T2 signal on plain MRI and appeared moderate homogeneous enhancement on post-contrast MRI scan.

关 键 词：血管外皮细胞瘤 体层摄影术 磁共振成像 

分 类 号：R445.3[医药卫生—影像医学与核医学] R732.2[医药卫生—诊断学]