11. The causes of biliary atresia are not well understood. 12. There are isolated examples of biliary atresia in animals. 13. It can damage tissue and is mostly used in biliary tract specialty centers. 14. Finally, increased biliary pressure decreases production of IgA immunoglobulins in the bile. 15. A recent study shows that postcholecystectomy syndrome can be caused by biliary microlithiasis. 16. The biliary tract can also serve as a reservoir for intestinal tract infections. 17. Similar to ALT and AST, ALP is not specific for biliary tract disease. 18. Biliary excretion of azithromycin, predominantly unchanged, is a major route of elimination.19. Other biliary tract cancers include gallbladder cancer and cancer of the ampulla of Vater. 20. Infection with the bacteria Helicobacter bilis and Helicobacter hepaticus species can cause biliary cancer.
