Definition: The term "circumbulbar" refers to a region or area of the body that lies adjacent to the umbilical cord, which is a vital structure in fetal development. This region is also known as the uterine cervix and is crucial for the movement of nutrients and oxygenated blood into the fetus during pregnancy. The circumbulbar region can be divided into two main parts: the inner part (the "necrotic" or "red" part) and the