摘要
目的 :分析周围神经鞘瘤的CT表现 ,探讨其CT征象与病理组织学关系。材料与方法 :报告57例经手术病理证实 ,CT资料完整的神经鞘瘤。其中椎管内24例 ,颈部6例 ,纵隔10例 ,腹部11例 ,臂丛4例 ,胸壁2例。结果 :除部分椎管内神经鞘瘤CT表现软组织肿块不明显外 ,其余部位的神经鞘瘤CT平扫为等于、略低于或低于肌肉密度的软组织肿块影 ,边缘光滑 ,密度均匀或不均匀 ,增强扫描呈不均匀强化 ,其病理因素有 :①肿瘤细胞外液丰富 ,含水量高。②细胞排列稀疏 ,间质成分及粘液成分多。③肿瘤包膜完整。④肿瘤出血 ,坏死 ,囊变。结论 :神经鞘瘤具有沿神经分布 ,低于肌肉密度并不均匀强化的特点 ,有助于与其他软组织肿瘤鉴别。神经鞘瘤的CT征象缺乏特异性时 ,确诊需靠病理诊断。
Objective:To analyze the CT features of peripheral neurilemoma and the relationship between CT features and pathological findings.Materials and Methods:57 cases of neurilemoma proved surgically were reviewed.The sites of the tumor were intravertebral canal(24 cases),cervical region(6 cases),mediastinum(10 cases),abdomen(11 cases),bronchia plexus(4 cases)and chest wall(2 cases) Results:The neurilemoma of intraspinal canal didn't show definite soft tissue mass.All the neurilemomas in other aver demonstrated isodense or mild hypotenuse masses on plain CT scan,with well-defined marge,homogeneous or heterogeneous attenuation.After contrast the lesions showed inhomogeneous enhancement.The corresponding pathological findings related to the CT features were:①Full of extracellular fluid and water.②Loosely arranged cells with more interstitial and myxoid tissue.③The lesions were usually well encapsulated.④Bleeding,necrosis and cystic changes within the lesions.Conclusion:Although the CT features of neurilemoma didn't have specificity,the exact diagnosis depended on the histopathology,on the other hand,neurilemoma had the characteristics of along the nerve distribution,hypodensity and inhomogeneous enhancement on CT scan,which can help to distinguish it from other soft-tissue tumors.
出处
《中国临床医学影像杂志》
CAS
2000年第4期237-240,共4页
Journal of China Clinic Medical Imaging
关键词
神经鞘瘤
CT
诊断
病理
neurilemoma
tomography,X-ray computed
