The CT and US features of Ewing’s sarcoma/primary neuroectodermal tumor of the kidney: two case reports and review of literature

Abstract

Da-Fu Zhang,* Zhen-Hui Li,* De-Pei Gao, Guang-Jun Yang, Ying-Ying Ding, Guan-Shun Wang, Xing-Xiang Dong Department of Radiology, The Third Hospital of Kunming Medical University, Tumor Hospital of Yunnan Province, Kunming, People’s Republic of China *These authors contributed equally to this work 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. Keywords: Ewing’s sarcoma, neuroectodermal tumor, X-ray computed tomography, histology, ultrasound

Keywords

• Ewing sarcoma
• neuroectodermal tumor
• X-ray computed，Tomography
• histology
• ultrasound