title: The CT and US features of Ewing's sarcoma/primary neuroectodermal tumor of the kidney: two case reports and review of literature.
abstract: Ewing's sarcoma/primary neuroectodermal tumor (EWS/PNET) is an extraordinarily rare primary tumor of the kidney with characteristic histology. To date, the imaging features of EWS/PNET have not been clearly described. Here, we report two cases of EWS/PNET confirmed by fine-needle aspiration biopsy and analyze the findings of computed tomography and ultrasound. The radiological features of EWS/PNET are presented along with a brief review of the pertinent literature to have a further understanding of EWS/PNET's imaging features.
authors.affiliation: Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People's Republic of China.
authors.forename: Da-Fu
authors.initials: DF
authors.lastname: Zhang
authors.affiliation: Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People's Republic of China.
authors.forename: Zhen-Hui
authors.initials: ZH
authors.lastname: Li
authors.affiliation: Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People's Republic of China.
authors.forename: De-Pei
authors.initials: DP
authors.lastname: Gao
authors.affiliation: Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People's Republic of China.
authors.forename: Guang-Jun
authors.initials: GJ
authors.lastname: Yang
authors.affiliation: Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People's Republic of China.
authors.forename: Ying-Ying
authors.initials: YY
authors.lastname: Ding
authors.affiliation: Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People's Republic of China.
authors.forename: Guan-Shun
authors.initials: GS
authors.lastname: Wang
authors.affiliation: Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People's Republic of China.
authors.forename: Xing-Xiang
authors.initials: XX
authors.lastname: Dong
keywords: Ewing’s sarcoma; X-ray computed tomography; histology; neuroectodermal tumor; ultrasound