title: Hepatic pathology of biliary atresia: A new comprehensive evaluation method using liver biopsy.
abstract: OBJECTIVE
  Despite its unique pathological characteristics, biliary atresia (BA) has no consensus pathological grading system. Therefore, the purpose of this study was to propose a new pathological grading system and to compare the diagnostic value of intraoperative frozen and postoperative paraffin-embedded liver sections.
  
  
  METHODS
  A total of 81 BA patients were analyzed for clinical and biochemical data, immunohistochemistry, and routine postoperative histology and intraoperative frozen pathology sections. Bile duct hyperplasia was classified into three grades (B1-B3), and fibrosis was classified into four classical grades (F1-F4).
  
  
  RESULTS
  The patients included 41 males and 40 females, aged 35-150 days. The repartition, in terms of severity, of small bile duct hyperplasia and fibrosis was as follows: B1, 21 cases; B2, 41 cases; B3, 19 cases; F1, 1 case; F2, 11 cases; F3, 51 cases; and F4, 18 cases. Both grades were statistically correlated. When comparing intraoperative frozen and postoperative paraffin-embedded sections, the overall diagnostic concordance rate was 97.5%.
  
  
  CONCLUSIONS
  The new proposed pathological grading system may be useful for the diagnostic and prognostic assessment of BA. In addition, intraoperative frozen liver tissue biopsy samples represent a valuable and promising adjunct to the conventional postoperative paraffin-embedded sections.
authors.affiliation: Department of General Surgery, Jiangxi Children's Hospital, Nangchang, China. ywp07912000@163.com.
authors.forename: Shouhua
authors.initials: S
authors.lastname: Zhang
authors.forename: Yan
authors.initials: Y
authors.lastname: Wu
authors.forename: Zhiwen
authors.initials: Z
authors.lastname: Liu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Tao
authors.forename: Jinshi
authors.initials: J
authors.lastname: Huang
authors.forename: Wenping
authors.initials: W
authors.lastname: Yang
mesh_terms: D001652:Bile Ducts / Q000473:pathology*; D001656:Biliary Atresia / Q000150:complications / Q000473:pathology*; D001706:Biopsy / Q000379:methods; D005260:Female; D005629:Frozen Sections / Q000379:methods*; D006801:Humans; D006965:Hyperplasia; D007150:Immunohistochemistry; D007223:Infant; D008099:Liver / Q000473:pathology*; D008103:Liver Cirrhosis / Q000209:etiology / Q000473:pathology; D008297:Male; D016612:Paraffin Embedding / Q000379:methods*; D011379:Prognosis; D015203:Reproducibility of Results; D012720:Severity of Illness Index