title: Undifferentiated embryonal sarcoma: a case report.
abstract: BACKGROUND
  Undifferentiated embryonal sarcoma (UES) is the fourth most common hepatic malignancy diagnosed in children, but is extremely rare in older patients. Classification of the tumor is difficult because of its unknown etiology.
  
  
  OBJECTIVE
  The purpose of this study is to describe a case of UES in a 19-year-old pregnant woman with UES who delivered a stillborn fetus and passed away because of UES, and how medical imaging can be used to help differentially diagnose UES.
  
  
  CONCLUSIONS
  A multiphase liver computed tomography protocol best demonstrates all forms of liver cancers and lesions; therefore, it is the scan of choice when a liver abnormality is suspected but the type of lesion is unknown.
authors.affiliation: School of Allied Health Professions, The Ohio State University, Columbus, Ohio, USA.
authors.forename: Nina
authors.initials: N
authors.lastname: Kowalczyk
authors.forename: Zachary
authors.initials: Z
authors.lastname: Carr
mesh_terms: D018236:Carcinoma, Embryonal / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging*; D011247:Pregnancy; D011252:Pregnancy Complications, Neoplastic / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult