internal iliac vein

The internal iliac vein (IIV) represents the union of veins and venous plexuses draining the pelvic viscera, pelvic wall, external genitalia, perineum, buttocks, and medial thigh.

Gross anatomy


Above the greater sciatic notch.

Course and termination

Ascends out of pelvis to meet the ipsilateral external iliac vein at pelvic brim anterior to sacroiliac joint.

  • internal pudendal vein
  • superior and inferior gluteal veins
  • obturator vein
  • lateral sacral vein
  • vesical venous plexus
  • prostatic venous plexus
  • uterine venous plexus
  • vaginal venous plexus