The term "vena azygos minor superior" refers to a blood vessel in the human body. Synonyms for this anatomical structure include "superior minor azygos vein" and "minor superior azygos vein". These terms are used to describe a vein that runs alongside the azygos vein, an important vessel that transports deoxygenated blood from the upper body to the heart. The "vena azygos minor superior" is a smaller counterpart to the main azygos vein and plays a role in facilitating blood circulation. Its various synonyms ensure that medical professionals can effectively communicate and refer to this specific blood vessel within the human body.