title: Sonography of the caudate vein: value in diagnosing Budd-Chiari syndrome.
abstract: OBJECTIVE
  The aim of this study was to evaluate the usefulness of sonography in measuring the caudate vein and lobe when diagnosing Budd-Chiari syndrome.
  
  
  METHODS
  Our study included a group of 16 patients with Budd-Chiari syndrome. We compared this patient group with a control group of 40 patients with cirrhosis and 66 healthy subjects without liver disease. On sonography, we measured the diameter of the caudate lobe and the presence and diameter of the caudate vein. These measurements were then compared for both groups.
  
  
  RESULTS
  In half of the patients with Budd-Chiari syndrome, sonography showed a visible caudate vein (3-21 mm; mean, 7.3 mm; median, 4.6 mm). However, in the control group, spontaneous visualization was seen in only eight (7.5%) of 106 subjects, none of whom had cirrhosis. The caudate lobe was larger in patients with cirrhosis than in healthy subjects. Likewise, in patients with Budd-Chiari syndrome, the caudate lobe was larger than that in patients with cirrhosis.
  
  
  CONCLUSIONS
  When sonography reveals a caudate vein equal to or larger than 3 mm in diameter in the appropriate clinical setting, one should strongly suspect Budd-Chiari syndrome.
authors: Department of Radiology, Hospital Clinic, C/Villarroel, 170, Barcelona 08036, Spain. xbarga@clinic.ub.es
authors: Xavier
authors: X
authors: Bargalló
authors: Rosa
authors: R
authors: Gilabert
authors: Carlos
authors: C
authors: Nicolau
authors: Juan Carlos
authors: JC
authors: García-Pagán
authors: Jaume
authors: J
authors: Bosch
authors: Concepció
authors: C
authors: Brú
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006502:Budd-Chiari Syndrome / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006503:Hepatic Veins / Q000000981:diagnostic imaging*; D006801:Humans; D008099:Liver / Q000098:blood supply* / Q000000981:diagnostic imaging*; D008103:Liver Cirrhosis / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D018608:Ultrasonography, Doppler