What is the surgical procedure that joins two ducts or vessels known as?

The surgical procedure that joins two ducts or vessels is known as anastomosis. This technique is commonly used in various surgeries, particularly in cardiovascular, gastrointestinal, and organ transplant procedures, to create a connection between two parts of the body, allowing for the proper flow of bodily fluids. The term anastomosis specifically refers to the creation of an opening that connects two structures, which can help restore function or enable communication between two systems, like blood vessels or parts of the intestine.

The other options, while related to surgical procedures, do not accurately describe this specific action. Catheterization refers to the insertion of a tube into a vessel or cavity for diagnostic or therapeutic purposes. Resection involves the removal of a portion of an organ or tissue and does not imply joining anything together. Suturing refers to the process of stitching tissue together, which can be part of various surgical procedures but does not specifically denote the joining of two ducts or vessels. Thus, anastomosis is the appropriate term for this surgical connection.