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目的研究分析CT与磁共振(MR)在诊断腹部外周性原始神经外胚层肿瘤中的应用价值。方法 60例腹部外周性原始神经外胚层肿瘤患者,在研究分析患者临床资料的基础上,患者均给予CT与MR扫描检查,观察检查结果。结果诊断结果显示,有32例患者的神经外胚层肿瘤出现于腹膜腔,16例患者肿瘤位于腹膜后间隙,另12例患者肿瘤分别位于左肾、右肾上腺与胰腺(各4例);神经外胚层肿瘤位于胰腺部位的患者出现恶心、呕吐与黄疸等症状;在患者接受CT平扫时,影像学资料表现出不均匀的软组织肿块,且呈现出浸润性生长,与周围组织之间的界限并不是非常清晰,肿块直径3~15 cm,且平扫显示等密度或低密度;而在进行MR平扫时,发现T1WI出现等或低较为混杂的信号,肿瘤表现出的信号与肌肉相等或略低,而T2WI及抑脂像表现出不均匀的高信号或混杂信号,检查出的大部分肿瘤是不均匀的高信号,少数有出血征兆;在CT与MR增强扫描时,肿瘤表现出不均匀强化,且还会出现不同程度坏死的现象,并且还可观察到肿瘤出现隔样改变及网格状强化,在肿瘤靠近周围骨质时,就会发现相邻骨质被破坏,有的甚至可观察到骨膜反应。结论在诊断腹部外周性原始神经外胚层肿瘤时,利用CT与MR可充分显示肿瘤内部结构和相邻组织之间的关系,同时还能够观察到肿瘤转移情况,在临床中具有非常高的应用价值。
Objective To study the value of CT and magnetic resonance (MR) in the diagnosis of peripheral primitive neuroectodermal tumors of the abdomen. Methods Sixty patients with peripherally primitive primitive neuroectodermal tumors of the abdomen were studied with CT and MR scanning on the basis of their clinical data. The results of the examination were observed. Results The diagnostic results showed that there were 32 cases of neuroectodermal tumors in the peritoneal cavity, 16 cases of tumors located in the retroperitoneal space, and the other 12 cases were located in the left kidney, right adrenal gland and pancreas (4 cases each); neurological Patients with germ-layer tumors at the pancreas showed nausea, vomiting and jaundice. Imaging was uneven with soft-tissue mass in patients undergoing CT scan and showed a borderline between infiltrative growth and surrounding tissue Is not very clear, the mass diameter of 3 ~ 15 cm, and plain scan showed equal density or low density; while in MR plain scan, T1WI found equal or low mixed signal, the tumor showed the signal equal to the muscle or slightly Low, and T2WI and fat suppression showed uneven high signal or mixed signal, most of the detected tumor is uneven high signal, a small number of bleeding signs; CT and MR enhanced scan, the tumor showed uneven Strengthen, and there will be a phenomenon of varying degrees of necrosis, and can also be observed changes in the tumor and mesh-like enhancement in the tumor near the surrounding bone, you will find the adjacent bone is destroyed, and some even Periosteal reaction was observed. Conclusion The diagnosis of abdominal peripheral primitive neuroectodermal tumors, the use of CT and MR can fully display the relationship between the internal structure of the tumor and adjacent tissues, but also to observe the tumor metastasis, has a very high clinical value .