title: [Leiomyosarcoma of the inferior vena cava. Diagnosis using endoscopic ultrasound-guided fine-needle aspiration biopsy].
abstract: METHODS
  A 75-year-old woman was admitted because of upper abdominal pain, nausea and vomiting.
  
  
  METHODS
  These symptoms were caused by a large tumor of the right retroperitoneal space. Computed tomography and transabdominal ultrasound did not unequivocally determine the site of the mass. Endoscopic ultrasound (EUS) and EUS-guided fine-needle aspiration biopsy (EUS-FNA) ensured safe immunohistochemical diagnosis of a leiomyosarcoma of the inferior vena cava (IVC).
  
  
  METHODS
  The patient underwent successful en-bloc resection of the tumor and the IVC followed by prosthetic reconstruction.
  
  
  CONCLUSIONS
  This case emphasizes the role of EUS and EUS-FNA in the diagnosis of retroperitoneal lesions. Leiomyosarcoma of the IVC, although rare, should be considered in the differential diagnosis of a retroperitoneal mass.
authors.affiliation: Klinik für Innere Medizin, Krankenhaus Märkisch Oderland, Prötzeler Chaussee 5, 15331 Strausberg. c.jenssen@khmol.de
authors.forename: C
authors.initials: C
authors.lastname: Jenssen
authors.forename: C
authors.initials: C
authors.lastname: Siebert
authors.forename: S
authors.initials: S
authors.lastname: Bartho
mesh_terms: D015746:Abdominal Pain; D000368:Aged; D044963:Biopsy, Fine-Needle / Q000379:methods*; D001807:Blood Vessel Prosthesis; D003937:Diagnosis, Differential; D019160:Endosonography; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D009325:Nausea; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D036542:Tomography, Spiral Computed; D018615:Ultrasonography, Doppler, Color; D019043:Vascular Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D014682:Vena Cava, Inferior; D014839:Vomiting