Median sacral vein

Looks like

A single vein running down the middle of the front of the sacrum.

What it does

Drains the sacrum and coccyx into the left common iliac vein.

Keeping it well

Can bleed in rectal and lower-spine surgery.

Related conditions

• Bone metastases and spinal cord compression
• Chronic venous insufficiency
• Clotting disorders (thrombophilia & APS)
• Deep vein thrombosis
• Prostate cancer
• Varicose veins