There are several synonyms for the term "prepyloric vein" that are commonly used in medical literature. One alternative name for this vein is the "right gastroepiploic vein," which is named for its relation to the right gastroepiploic artery. Another term that is sometimes used is the "posterior superior pancreaticoduodenal vein," which refers to its location posterior to the head of the pancreas and superior to the duodenum. Additionally, the "superior mesenteric vein" is another vein that is closely associated with the prepyloric vein, as they both drain blood from the intestines and converge to form the portal vein.