title: Epithelioid hemangioendothelioma of right innominate vein mimics a teratoma: A case report.
abstract: BACKGROUND
  Epithelioid hemangioendothelioma (EHE) is a rare neoplasm commonly known to arise from the soft tissue, lung, and liver. EHE arising from right innominate vein (RIV) has scarcely been reported in English literature.
  
  
  METHODS
  Herein, we present a rare case of EHE of RIV in a 51-year-old woman with right-lower chest pain for 4 days. Computed tomography of the chest revealed a spherical mass with calcification and fatty foci located in the anterior mediastinum, thus a presumptive diagnosis of teratoma was made.
  
  
  METHODS
  Video-assisted thoracoscopic explorations and resection of mediastinal tumor were then performed. The pathological examination showed that the tumor was EHE. Postoperative radiotherapy was delivered to the patient. Pulmonary metastases were found by chest CT a year after surgery.
  
  
  CONCLUSIONS
  A diagnosis of EHE might be considered, when a mediastinal tumor closely related to veins showing intratumoral calcification and obvious enhancement, despite the presence of a clear boundary and visible fat content.
authors.affiliation: Department of Radiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China Department of Gynaecology and Obstetrics, Health Center of Huanghe Town, Zhangqiu, Shandong, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wan
authors.forename: Jiaxuan
authors.initials: J
authors.lastname: Zhou
authors.forename: Yudong
authors.initials: Y
authors.lastname: Yu
authors.forename: Qingyu
authors.initials: Q
authors.lastname: Sun
authors.forename: Yingying
authors.initials: Y
authors.lastname: Bao
authors.forename: Qiang
authors.initials: Q
authors.lastname: Lei
authors.forename: Qiao
authors.initials: Q
authors.lastname: Zou
authors.forename: Yingshi
authors.initials: Y
authors.lastname: Deng
authors.forename: Xinchun
authors.initials: X
authors.lastname: Li
mesh_terms: D016121:Brachiocephalic Veins / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D018323:Hemangioendothelioma, Epithelioid / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D013724:Teratoma / Q000175:diagnosis*; D019043:Vascular Neoplasms / Q000175:diagnosis* / Q000473:pathology