Definitions:

1. Small vein located in the pelvic region, associated with the sacrum, that helps drain blood from structures in the sacral area, including the pelvis and lower spine, and eventually carry it into larger venous systems. NOUN
   • In pelvic surgeries, careful dissection is needed to avoid damaging the sacral vein.
2. Vein of the sacral region. NOUN
   • The sacral vein can be compressed by a variety of factors, including tumors, trauma, and inflammation.

Synonyms:

• vena sacralis