Gong Jingshan, Zhang Yue, Zuo Min, Yang Zhong, Zang Da, Bao Shiyun, Xu Jianmin, Yu Xiaofang, Wang Xiaomei
Department of Radiology, Shenzhen People's Hospital, Second Clinical College, Jinan University, Guangdong Province, China.
Clin Imaging. 2009 May-Jun;33(3):196-9. doi: 10.1016/j.clinimag.2009.01.017.
Peripheral primitive neuroectodermal tumors (peripheral PNETs) are rare in the abdomen. We report the imaging findings of four peripheral PNETs arising in the abdomen. Three were ill-demarcated tumors and one was a well-demarcated tumor, with extensive local invasion and lymph node metastasis in two cases, respectively. The tumors are of inhomogeneous attenuation and heterogeneous enhancement after intravenous administration of contrast materials. Although their imaging manifestations cannot distinguish them from other sarcomas, recognition of these imaging features may be helpful in suggesting the possibility of peripheral PNETs in some cases.
外周原始神经外胚层肿瘤（外周PNETs）在腹部较为罕见。我们报告了4例发生于腹部的外周PNETs的影像学表现。其中3例肿瘤边界不清，1例边界清晰，分别有2例出现广泛的局部侵犯和淋巴结转移。肿瘤在静脉注射对比剂后呈不均匀衰减和不均匀强化。尽管其影像学表现无法将它们与其他肉瘤区分开来，但认识到这些影像学特征在某些情况下可能有助于提示外周PNETs的可能性。
