Eponyms in biliary tree.

Eponyms are very commonly used in medicine. Eponyms serve the goal of honoring scientists who have made important contribution to medicine. The article describes widespread and seldom used eponyms found in biliary structures. Priority of discovery of the "Heister's valve", "Luschka's ducts", "sphincter of Odd", "Vater's papilla" was established. An author provides biographical sketches of physicians in whose honor some anatomic entities were named.