Results: (1) Osseous PNET originated from embryonic migrating cells of neural crest.
结果：(1)骨原始神经外胚层肿瘤来源于神经嵴的胚胎迁移细胞。
The aim of the study was to assess whether aggressive pancreatic resection is justifiable for patients with PNET.
本研究的目的是评估扩大胰腺切除术是否适用于患PNET的病人。
Objective To study the pathological characteristics of primitive neuroectodermal tumor(PNET) of bone and soft tissue.
目的探讨原始神经外胚层瘤（PNET）的病理学特点及其临床意义。
In patients with malignant PNET, metastatic recurrence is not uncommon and will usually require additional multimodality therapy.
在患恶性pnet的病人中，转移性复发并不少见，此时通常需要多学科综合治疗。
It is suggested that the reliability index of each individual mechanism be calculated in generalized stochastic space, and then structural system reliability be calculated in terms of PNET.
采用在广义随机空间内计算各机构可靠指标，然后利用PNET法计算结构体系可靠度，计算简便，精度也满足要求。
It is suggested that the reliability index of each individual mechanism be calculated in generalized stochastic space, and then structural system reliability be calculated in terms of PNET.
采用在广义随机空间内计算各机构可靠指标，然后利用PNET法计算结构体系可靠度，计算简便，精度也满足要求。
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