The vena circumflexus femoris is a vein that runs through the thigh, connecting to the larger femoral vein. This vein is also known by its common name, the lateral circumflex femoral vein. Other synonyms for this vein include the circumflex femoral vein, the lateral femoral circumflex vein, and the vena circumflexa femoris lateralis. While these terms may sound different, they all refer to the same vein in the body. Understanding the various synonyms can be helpful when studying anatomy or discussing medical conditions that involve this vein in the thigh.