孤立性浆细胞瘤的影像学特征  

The imaging features of solitary plasmacytoma

作　　者：徐剑峰[1] 陈小华[1] 周国锋[1] 汤伟[1] 吴献华[1] 

机构地区：[1]南通大学附属医院影像科,226001

出　　处：《江苏医药》2011年第23期2801-2803,共3页Jiangsu Medical Journal

摘　　要：目的探讨孤立性浆细胞瘤的影像特征。方法选择经组织学证实为孤立性浆细胞瘤患者17例;其中,X线平片检查7例,CT检查15例,CT增强扫描6例,MRI检查8例,4例行MRI增强扫描。结果 17例中,病变位于脊柱11例,下颌骨1例,肋骨2例,胸骨1例,胃1例,蝶窦和筛窦1例。骨的孤立性浆细胞瘤主要表现为轻度膨胀性溶骨性骨质破坏,侵入椎管内形成硬膜外肿块,脊髓四周环绕肿块者呈围管征,MRI增强常见脊膜强化征;孤立性浆细胞瘤瘤体内骨小梁残留,发生于脊柱者特征性的影像表现是"微脑"征;髓外浆细胞瘤和孤立性浆细胞瘤的软组织肿块增强后中度到显著强化,MRI可见间隔强化。结论脊柱的孤立性浆细胞瘤发生率最高,具有一定的影像学特征;CT和MRI联合应用能提高孤立性浆细胞瘤诊断和鉴别诊断水平。Objective To investigate the imaging characteristics of solitary plasmacytoma.Methods The solitary plasmacytoma was confirmed histologically in 17 patients,of whom 7 cases were examined by X-ray,15 cases by CT（6 cases underwent enhancement）,8 cases by MRI（4 cases underwent enhancement）.Results Of 17 cases,the tumor occurred in the spine in 11 cases,in the mandible in 1 case,in the rib in 2 cases,in the sternum in 1 case,in the stomach in 1 case,in the sphenoid and ethmoid sinus in 1 case.The main features of solitary plasmacytoma included a slight expansion of osteolytic bone destruction,formation of an epidural mass in the spinal canal by soft tissue invasion,and cuffing sign in the spinal cord surrounded by tumor.Enhanced MRI usually showed an enhancement of spinal dura matter.The residual trabeculae in solitary plasmacytoma could be seen.The character of solitary plasmacytoma occurred in the spine showed a ＂mini brain＂ sign.The soft tissue mass of extramedullary plasmacytoma and solitary plasmacytoma of bone displayed a moderate to marked enhancement with septal enhancement on MRI.Conclusion The solitary plasmacytoma occurs most frequently in the spine with certain imaging features.Combined examination of CT and MRI can improve the accuracy of diagnosis and differential diagnosis in the patients with solitary plasmacytoma.

关 键 词：浆细胞瘤 电子计算机X射线断层扫描 磁共振成像 

分 类 号：R445[医药卫生—影像医学与核医学]