Askin瘤的CT表现分析  

CT features of Askin tumor

作　　者：程念岚 李邦国 吴硕 张雪梅 徐春艳 CHENG Nianlan;LI Bangguo;WU Shuo;ZHANG Xuemei;XU Chunyan(Department of Radiology,the Affiliated Hospital of Zunyi Medical University,Zunyi,Guizhou Province 563003,China)

机构地区：[1]遵义医科大学附属医院影像科,贵州遵义563003

出　　处：《实用放射学杂志》2020年第8期1212-1215,共4页Journal of Practical Radiology

摘　　要：目的探讨胸壁及肺Askin瘤的CT表现特点及其诊断价值.方法回顾性分析经病理证实的6例Askin瘤,均行CT平扫,其中3例行增强扫描,从CT图像上分析肿瘤的位置、数量、形态、大小、密度、强化程度及方式、周围侵犯及远处转移等.结果5例为胸壁来源,1例为左肺来源,均为单发肿物.4例呈类圆形,2例呈分叶状,大小56 mm×52 mm×32 mm^130 mm×111 mm×92 mm.1例密度均匀,5例密度不均匀,见不同程度坏死区.3例行增强扫描均呈不均匀强化,2例有延迟强化.所有病例均侵及邻近组织,包括5例肋骨受侵,5例胸膜受侵,1例后纵隔及椎管受侵.均未见淋巴结及远处转移征象.结论Askin瘤的CT表现具一定特征性,肿瘤内坏死多见钙化少见,增强扫描不均匀强化并有延迟强化,淋巴结及远处转移少见.Objective To investigate the CT features and the diagnostic value of chest wall and lung Askin tutmor.Methods 6 ases with Askin tumors confirmned by pathology were amalyaed rspetively,and all of the cases arried out CT plain san,among whom 3 cases performed contrast-enhanced scan.CT signs of this group were analyzed,including the location,quantity,shape,size,density,degree and pattern of enhancement,adjacent tssue invasion and distant metastasis of the tumors.Results All the tumors appeared as a single mass,and 5 cases originated from the chest wall and only 1 from the lung.4 cases showed a round-like mass and 2 cases were lobulated.The tumor sixe ranged from 56 mm×52 mm×32 mm to 130 mm×111 mm×92 mm.5 cases appeared as inhomogeneous density with divese degree of necrosis area,and only 1 case showed uniform density.All the 3 cases performed enhanced scan showed inhomogeneous enhancement,among which 2 cases showed delayed enbancement.All tumors invaded adjacent tissues,including 5 cases of rib invasion,5 cases of pleural involvement and 1 case of postmediastinum and the spinal canal involvement.No lymphatic and remote metastases were found in this group.Conclusion CT features of Askin tumor have some characteristic.Tumor necrosis exists frequently but calcification is rare.They always show inhomogeneous and delayed enhancement on contrast enhanced scan,meanwhile lymphatic and remote metastases are not very common.

关 键 词：ASKIN瘤 计算机体层成像 

分 类 号：R734.42[医药卫生—肿瘤] R814.42[医药卫生—临床医学]