What is the term for a surgical or pathologic connection between two vessels?

An anastomosis refers to a surgical or pathological connection between two vessels, which can be blood vessels, lymphatic vessels, or other tubular structures. This connection allows for the flow of fluids between the vessels and can be created intentionally through surgical procedures to restore blood flow or provide an alternative route for circulation after a blockage.

Anastomoses can be important in various medical situations, such as in cases of vascular grafting or when bypassing a blockage, ensuring that adequate blood supply is maintained. The concept of anastomosis highlights the body’s ability to adapt and the surgical skills used to enhance or restore function.

In contrast, stenosis refers to the abnormal narrowing of a vessel, which would impede blood flow. Occlusion signifies a blockage, often a complete obstruction, preventing flow entirely. A bypass typically describes a procedure designed to divert blood flow around a blocked vessel, which may involve creating an anastomosis, but the terms are not synonymous. Thus, an anastomosis is specifically the connection itself, distinguishing it clearly from the other terms.