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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 findings of peripheral schwannoma and to explore the relationship between CT signs and histopathology. Materials and Methods: 57 cases were confirmed by surgery and pathology, CT data complete schwannoma. Including 24 cases of spinal canal, neck 6 cases, mediastinal 10 cases, 11 cases of abdomen, brachial plexus 4 cases, 2 cases of chest wall. Results: In addition to the CT manifestations of neurilemmoma in some vertebral canal lesions were not obvious, the other parts of the schwannoma CT scan equal to, slightly below or below the muscle density of soft tissue mass, smooth edges, uniform density or not Uniform, enhanced scan showed uneven enhancement, the pathological factors are: ① tumor extracellular fluid rich, high water content. ② cells arranged in sparse, interstitial components and mucus composition. ③ complete tumor capsule. ④ tumor bleeding, necrosis, cystic change. Conclusion: Schwannoma has the characteristics of being distributed along the nerve and being less than the density of the muscle and being unevenly enhanced, which is helpful for the identification of other soft tissue tumors. Schwannoma CT signs of the lack of specificity, the diagnosis need to rely on pathological diagnosis.