【摘要】 目的探讨节细胞神经瘤的CT、MRI表现及其诊断价值。方法回顾性分析14例经手术病理证实的节细胞神经瘤患者的CT、MRI及临床病理资料。结果节细胞神经瘤表现为边界清楚的类卵圆形肿块,亦可呈不规则形,沿冠状轴生长,可对邻近大血管包绕1/2以上(4/14)。CT平扫表现水样至肌肉样密度,多表现低密度(10/12),其内散在点状或结节状钙化(5/12),不增强或轻度增强居多(6/9)。MRIT1WI为低信号,T2WI为不均匀高信号;动态增强,早期不强化,逐渐增强,病理上与肿瘤富含大量黏液基质相关。包膜可强化。结论CT、MRI诊断节细胞神经瘤各具特征,其影像学表现与瘤内节细胞、神经纤维成分、黏液基质比例的变化密切相关。更多还原

【Abstract】 Objective To evaluate CT and MRI manifestations and diagnostic value of ganglioneuroma.Methods CT and MRI manifestations and clinical pathological data in 14 patients with pathologically confirmed ganglioneuroma were retrospectively reviewed.Results Ganglioneuromas appeared as the well defined,oval or irregular masses along coronal axle,and the adjacent main vessels were partially wrapped more than 1/2（4/14）.CT attenuation of tumors was like that of water to muscle and predominantly low （10/12）.There was punctate or tubercle calcification in tumors（5/12） and no enhancement or slight enhancement（6/9） on contrast-enhanced CT.MRI signals were mainly low intensity on T₁WI and inhomogeneously high intensity on T₂WI.Dynamic enhancement studies showed a lack of early enhancement but gradual increasing,which might correlate histologically with abundant myxoid matrix.The capsule of tumor might may enhanced.Conclusion Ganglioneuroma has respective features on CT and MRI,and imaging findings of tumors are well correlated with myxoid stroma,collagen fibers and cellular components varing in ganglioneuroma.更多还原