节细胞神经瘤的影像学表现与病理对照  

Imaging Features of Ganglioneuromas: Comparison with Pathological Findings

作　　者：矫娜[1] 徐坚民[1] 龚静山[1] 杨敏洁[1] 孙黎明[1] 凌人男[1] 

机构地区：[1]深圳市人民医院放射科,广东省518000

出　　处：《临床放射学杂志》2014年第10期1560-1563,共4页Journal of Clinical Radiology

摘　　要：目的探讨节细胞神经瘤的影像学特征,提高对该病的诊断水平。方法回顾性分析经手术病理证实的33例节细胞神经瘤的影像学特征,并与手术病理相对照。结果 33例节细胞神经瘤中,病灶位于后纵隔者16例,腹膜后者10例,肾上腺者4例,盆腔者2例,骶管内1例。所有病灶均边界清楚,呈类圆形或不规则形;不规则形肿块多沿周围脏器呈嵌入性生长,邻近大血管被包埋或受压移位为其特征性表现之一。CT平扫呈低至中等密度,11例病灶内见斑点状、沙粒状钙化;MRI上,T1WI呈低信号,T2WI呈不均匀或均匀性高信号;增强扫描动脉期无明显强化,门静脉期及延迟期呈轻度渐进性强化。结论节细胞神经瘤具有一定的影像学特征性表现,有助于其诊断和鉴别诊断。Objective To analyze the imaging features of ganglioneromas.Methods Imaging findings of 33 patients with pathologically-proved ganglioneuroma were retrospectively analyzed,and to compare the imaging features with pathological results.Results The lesions were located at the posterior mediastinum（n=16）,retroperitoneal region（n=10）,adrenal（n=4）,pelvic（n=2） and sacral canal（n=1）.Morphologically,all the lesions had well-defined borders,presented as round or irregular mass.The irregular lesion often grew into the space between adjacent organs and structures and embedded the large vessels nearby.（3） On plain CT scans,the lesions were manifested as iso-density or hypo-density shadows,and scattered mottled or sand-like calcifications within the lesions were demonstrated in 11 patients.MRI scanning showed that the lesions were characterized by hypo-intense signals on T1 WI and homogeneous or inhomogeneous hyperintense signals on T2 WI.On contrast-enhanced MRI no obvious enhancement of the lesion was seen in arterial phase,while slight to moderate enhancement of the lesion was observed in portal and delayed phase.Conclusion Ganglioneuroma has some specific imaging features,and imaging examinations are very helpful for its diagnosis and differential diagnosis.

关 键 词：节细胞神经瘤 体层摄影术 X线计算机 磁共振成像 病理 

分 类 号：R739.43[医药卫生—肿瘤] R730.44[医药卫生—临床医学]