节细胞神经瘤的影像诊断及病理分析

目的探讨CT及MRI在诊断节细胞神经瘤中的价值,旨在提高诊断的准确率。方法收集并分析30例节细胞神经瘤患者的CT及MRI影像与临床资料,并与病理结果进行对照。结果29例为单发病灶,另1例位于颈1/2椎管内病灶为双侧发病。后纵隔12例,椎管内外5例,后腹膜3例,肾上腺8例,淋巴结2例。CT平扫呈均匀或不均匀性低密度影,低于邻近肌肉密度,增强扫描动脉期病灶轻度强化或无强化,静脉期及延迟期可见持续性不均匀强化。6例肿瘤内见弧形、斑点状钙化。MRI平扫T1WI呈低信号,T2WI呈稍高/高信号为主,增强后呈轻至中度渐进性强化。结论节细胞神经瘤的CT和MRI表现具有一定特征性。当发生于后纵隔、腹膜后、肾上腺、椎管内外及淋巴结等部位时又具有相对的特异性,了解这些共性与个性,对进一步提高该病诊断的准确性非常有价值。

Imaging diagnosis and pathological analysis of ganglioneuroma

Objective To investigate the value of CT and MRI in the diagnosis of ganglioneuroma,aiming to improve the accuracy of diagnosis.Methods CT and MRI images and clinical data of 30 patients with ganglioneuroma were collected and analyzed,and compared with pathological results.Results Twenty-nine patients had a single lesion,and the other one was located in the cervical 1/2 spinal canal.There were 12 cases of posterior mediastinum,5 cases of internal and external spinal canal,3 cases of posterior peritoneum,8 cases of adrenal gland and 2 cases of lymph nodes.CT plain scan showed uniform or uneven low-density shadow,lower than adjacent muscle density,enhanced mild or no enhancement of scanning arterial lesions,continuous uneven enhancement in venous phase and delayed phase.Curved and spotted calcification was seen in 6 tumors.The MR scan showed a low signal on T1WI,and the T2WI showed a slightly high/high signal.After enhancement,it showed mild to moderate progressive enhancement.Conclusion The CT and MRI images of ganglioneuroma have certain characteristics.When it occurs in the posterior mediastinum,retroperitoneum,adrenal gland,spinal canal and lymph nodes,it has relative specificity.Understanding these commonalities and individualities is very valuable for further improving the accuracy of the diagnosis.