The paraumbilical vein, also known as the umbilical vein or epigastric vein, is one of the major veins in the human body, responsible for carrying oxygenated blood from the placenta to the fetus during gestation. There are several synonyms for this vein, including the periumbilical vein, peri-umbilical vein, and hypogastric vein. These terms are often used interchangeably in medical literature. Additionally, the paraumbilical vein is sometimes referred to as the "vein of Galen", after the ancient Greek physician who first described it. Understanding the various synonyms for this important vein can help medical professionals communicate more effectively with one another and provide better care to their patients.