title: Evaluation of the characteristics of hepatic focal nodular hyperplasia: correlation between dynamic contrast-enhanced multislice computed tomography and pathological findings.
abstract: OBJECTIVE
  To evaluate the characteristics of enhancement of focal nodular hyperplasia (FNH) of the liver by analyzing the dynamic contrast-enhanced multislice computed tomography (MSCT) features and correlating them with pathological findings.
  
  
  METHODS
  Nine males and 16 females with pathologically confirmed FNH and complete preoperative contrast-enhanced MSCT data were recruited for this study. The imaging features of FNH on the pre- and postcontrast MSCT were analyzed by two experienced radiologists by consensus.
  
  
  RESULTS
  Pathology showed central scars and abnormal blood vessels in 17 and 21 of 25 lesions, respectively, while MSCT with multiphase enhancement showed central scars in eight of the 17 lesions (47.1%) and abnormal arteries or draining veins in 13 of the 21 lesions (61.9%). Furthermore, abnormal draining veins in five lesions were found to be diagnostic, which is another important finding.
  
  
  CONCLUSIONS
  Multiphase scanning can provide the panorama of FNH lesions and reveal their enhancement patterns and pathological characteristics. Abnormal blood vessels within or around the lesion are demonstrated more often than central scar, and both should be observed for FNH diagnosis.
authors: Department of Radiology, Jiangwan Hospital.
authors: Hai-Tao
authors: HT
authors: Zhang
authors: Department of Radiology, Affiliated Huashan Hospital of Fudan University, Shanghai.
authors: Xin-Yi
authors: XY
authors: Gao
authors: Department of Radiology, Jiangwan Hospital.
authors: Qin-Sha
authors: QS
authors: Xu
authors: Department of Radiology, Zhejiang Province Tumor Hospital, Hangzhou, People's Republic of China.
authors: Yu-Tang
authors: YT
authors: Chen
authors: Department of Radiology, Jiangwan Hospital.
authors: Yu-Piao
authors: YP
authors: Song
authors: Department of Radiology, Affiliated Huashan Hospital of Fudan University, Shanghai.
authors: Zhen-Wei
authors: ZW
authors: Yao
keywords: abnormal vein; contrast enhancement; focal nodular hyperplasia; liver; multislice computed tomography; pathological findings