title: [Spiral CT features of hepatocellular caicinoma].
abstract: OBJECTIVE
  To analyze the features of two-phase spiral scanning in 54 cases of hepatocellular carcinoma and to evaluate its usefulness in diagnosis and differential diagnosis.
  
  
  METHODS
  Precontrast and postcontrast CT scans of the whole liver in all cases were carried out with GE-Hispeed Advantage spiral CT scanner. The arterial phase scanning was started at 25 sec after injection of contrast medium and the portal venous phase scanning at 70 sec.
  
  
  RESULTS
  In the 54 cases examined, 72 lesions were found in the arterial phase. In 28 of these lesions, it was enhanced homogeneously, while in 40 lesions, the enhancement was not homogeneous. Supplying artery could be seen in 4 of them. The remaining 4 lesions had no enhancement. There were 62 lesiosns with low density in portal venous phase. Portal vein tumor thrombus was seen in 8 cases, and pseudocapsule was observed in 7 lesions.
  
  
  CONCLUSIONS
  Two-phase spiral CT scanning is of value in the diagnosis and differential diagnosis of hepatocellular carcinoma.
authors.affiliation: Department of Radiology, Taishan Hospital, Taishan 529200, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Qiao
authors.forename: F
authors.initials: F
authors.lastname: Yan
authors.forename: J
authors.initials: J
authors.lastname: Wu
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed