侵袭性血管黏液瘤CT、MRI征象分析  

CT and MRI features of aggressive angiomyxoma

作　　者：钟群[1] 张盼[1] 方梦诗 王蕾[1] 林燕[1] 许尚文[1] 聂玫[1] 

机构地区：[1]福建医科大学福总临床医学院南京军区福州总医院影像科,福建福州350025

出　　处：《实用放射学杂志》2016年第11期1752-1754,共3页Journal of Practical Radiology

摘　　要：目的分析侵袭性血管黏液瘤（AA）的cT及MRI表现特点。方法收集本院病理证实为AA患者8例（男1例，女7例），分别应用多排螺旋CT（平扫2例，平扫＋增强4例）或磁共振（平扫＋增强6例）检查及后处理。观察病灶大小、位置、质地、形态、强化方式等表现并记录分析。结果病灶直径〉10 cm者4例；CT平扫为不均匀等／低密度影，边界清或大部分清楚6例；含囊变成分2例，有附壁结节2例；增强表现片状不均匀逐渐强化并范围扩大4例，多平面重建（MPR）显示分层漩涡征2例，病灶内成熟小血管影3例。MRI T2WI呈高／略高信号5例，其中分层漩涡征3例，含囊变成分2例；增强呈分层漩涡征逐渐强化并范围扩大3例，3例时间-信号曲线（TIC）均为缓升型。结论AA女性多见，CT／MRI表现病灶多较大，质地不均，逐渐强化并范围扩大，分层漩涡征具有特征性，CT可显示灶内小血管影，MRI表现缓升型曲线。Objective To analyze CT and MRI features of aggressive angiomyxoma. Methods Eight patients （1 male and 7 females） with aggressive angiomyxomas proven by pathology were collected in this study. Two patients underwent plain CT, 4 patients underwent plain and contrast-enhanced CT, and six patients underwent plain and contrast-enhanced MRI. The CT and MRI manifestations were described and recorded. On lesions＇ location,size,shape,margin,attenuation and enhancement behaviors. Results Four lesions were large than 10 cm in diameter. The lesions were inhomogeneous hypo-density or equal-density with clear or nearly clear margins on the plain CT. There were internal cystic degenerations in 2 cases, and episporium nodules in 2 cases. Contrast-enhanced CT showed inhomogeneous gradual enhancement. The layered whirlpool sign was seen in g cases; and internal mature small vessels were seen in 3 case on MPR images. On the MR images, 5 lesions showed hyperintense or slight hyperintense on T2WI, while 3 cases showed layered whirlpool and 2 cases showed internal cystic degenerations. The layered whirlpool architectures were gradually enhanced, and the time-intensity curves （TIC） showed slowly ascending after enhancement. Conclusion Aggressive angiomyxoma mainly occurs in female with tendency of large inhomogeneous mass. The inhomogeneous gradual enhancement and the layered whirlpool sign can be considered as the imaging characteristics. CT enhancement can detect internal small vessels. TIC of MRI are usually slowly ascending.

关 键 词：血管黏液瘤 侵袭性 计算机体层成像 磁共振成像 

分 类 号：R732.2[医药卫生—肿瘤] R814.42[医药卫生—临床医学]