8例外周性原始神经外胚层肿瘤的CT、MRI表现并文献复习

发布时间：2018-02-23 19:08

本文关键词： 外周性原始神经外胚层肿瘤计算机断层扫描磁共振成像病理免疫组织化学　出处：《东南大学学报(医学版)》2017年03期 　论文类型：期刊论文

【摘要】：目的:分析外周性原始神经外胚层肿瘤(pPNET)的CT、MRI表现。方法:结合相关文献,对8例pPNET患者的影像学及病理学资料进行回顾性分析。结果:病灶发生于软组织、骨骼、鼻道、内脏,主要表现为浸润性生长的较大软组织肿块,CT呈不均匀等低密度,MRI呈不均匀等长T_1等长T_2信号,境界不清,易坏死、囊变,无明显钙化,增强强化不均匀,实性成分轻中度强化,囊性成分无明显强化;位于骨骼的pPNET还表现为溶骨性骨质破坏,呈膨胀性改变,无明显肿瘤骨形成及骨膜反应,可继发病理性骨折。结论:pPNET影像学无明显特异征象,需经病理及免疫组化确诊,但影像学检查能清晰地显示病灶的大小、内部结构、毗邻关系、血供情况、侵犯范围及有无远处转移等情况,对治疗及预后具有重要价值。
[Abstract]:Objective: to analyze the CT MRI findings of peripheral primitive neuroectodermal tumors (PNET). Methods: the imaging and pathological data of 8 patients with pPNET were analyzed retrospectively. Results: the lesions occurred in soft tissue, bone and nasal tract. Viscera, the main manifestation of viscera was that the large soft tissue mass of infiltrative growth showed heterogeneous and iso-homogeneous low-density MRI signal of T1-like length T _ 2 signal, the boundary was unclear, easy to necrosis, cystic change, no obvious calcification, and enhancement was not homogeneous. PPNET in bone also showed osteolytic bone destruction, swelling change, no obvious bone formation and periosteum reaction. Conclusion there are no obvious and specific signs in the imaging of the disease, which need to be confirmed by pathology and immunohistochemistry, but the size, the internal structure, the adjacent relationship and the blood supply of the lesions can be clearly demonstrated by the imaging examination. The extent of invasion and distant metastasis are important for treatment and prognosis.
【作者单位】：南京市溧水区人民医院影像科;东南大学附属中大医院影像科;
【分类号】：R445.2;R730.44;R739.4

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