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    Ultra-structural and histopathological features of liver biopsy taken during laparotomy to confirm the diagnosis of biliary atresia
    (Wolters Kluwer Medknow Publications, 2022) Gurunluoglu, Semra; Gul, Mehmet; Zararsiz, Gokmen; Akpinar, Necmettin; Varol, Fatma, I; Demircan, Mehmet; Gurunluoglu, Kubilay
    Background: Neonatal cholestasis is caused by a group of diseases that cause jaundice, which can be encountered in the neonatal period. Biliary atresia (BA) and idiopathic neonatal hepatitis (INH) are among neonatal cholestasis diseases. Aims: The aim of this study was to perform histopathological and ultra-structural examinations of liver biopsy tissue samples from BA and INH patients with liver biopsies taken during laparotomy to confirm the diagnosis of biliary atresia. Settings and Design: A total of patients undergoing Kasai surgery before the age of 60 days were included in an early group (n = 7), whereas patients undergoing surgery after the age of 60 days were included in a late group (n = 11). The control group (n = 11) included INH patients. Materials and Methods: For histopathological examinations, liver tissue samples obtained intra-operatively were subjected to routine histopathological procedures after being stained with caspase-3 and cytokeratin-7 antibodies. Ultra-structural evaluations were also performed. Statistical analysis used: For comparisons between the groups, a one-way analysis of variance (ANOVA) test and the Mann-Whitney U test were used for continuous variables. Results: Histopathological findings reflected the specific liver pathologic findings seen in biliary atresia. Although there was no significant difference between the BA groups, these parameters were not detected in the control group. The histopathological evaluations revealed no significant differences in the findings of liver parenchyma damage between the early, late, and control groups. Electron microscopic examinations showed that the patients in the late group had more severe signs of intra-cellular damage to the liver. Conclusions: Although the histopathological examination revealed no significant differences in liver damage between the three groups, in ultra-structural evaluation, intra-cellular damage was found to be less in groups with better prognosis. Electron microscopy evaluations of intra-cellular damage may be more useful in this respect.