What is the procedure for removal of biliary ducts called?

The term that accurately describes the procedure for the removal of biliary ducts is extirpation. This term refers specifically to the complete removal of a tissue or an organ, which in this case applies to the surgical removal of biliary ducts.

Extirpation typically involves not just the excision of the organ, but also the removal of any surrounding tissue that may be contributing to a pathological condition, providing a more complete and thorough approach. This makes it an appropriate choice for the removal of biliary ducts, as it encompasses both the ducts and any associated or affected tissues.

The other terms, while they may seem related to removal, do not specifically capture the surgical context of biliary duct removal. Excision generally refers to cutting out a specific portion of tissue, which could imply only part of the duct instead of the entire duct system. Removal is a more general term and doesn't specify the surgical nature of the procedure. Ablation usually refers to the destruction of tissue by various means, such as heat or chemicals, rather than the physical removal of the structure itself.