Internal iliac vein
Updates to Article Attributes
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
Origin
Above the greater sciatic notch as a confluence of the gluteal veins and the pelvic tributaries described below.
Course and termination
Ascends out of pelvis, posterior to meetthe internal iliac artery along the medial surface of psoas major to join the ipsilateral external iliac vein at pelvic brim anterior to the sacroiliac joint to become the common iliac vein.
Tributaries
- 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
- rectal venous plexus
Relations
- bilaterally superior and posterior to the internal iliac artery
Related pathology
It is thought that thromboemboli from disease of the pelvic viscera or metastatic disease can spread superiorly as far as the superior vena cava via the communication between the lateral sacral veins and the vertebral venous plexuses1.
-<p>The <strong>internal iliac vein</strong> (<strong>IIV</strong>) represents the union of veins and venous plexuses draining the pelvic viscera, pelvic wall, external genitalia, perineum, buttocks, and medial thigh. </p><h4>Gross anatomy</h4><h5>Origin</h5><p>Above the <a href="/articles/greater-sciatic-notch">greater sciatic notch</a>.</p><h5>Course and termination</h5><p>Ascends out of pelvis to meet the ipsilateral <a href="/articles/external-iliac-vein">external iliac vein</a> at pelvic brim anterior to <a href="/articles/sacroiliac-joint">sacroiliac joint</a>.</p><h5>Tributaries</h5><ul>- +<p>The <strong>internal iliac vein</strong> (<strong>IIV</strong>) represents the union of veins and venous plexuses draining the pelvic viscera, pelvic wall, external genitalia, perineum, buttocks, and medial thigh. </p><h4>Gross anatomy</h4><h5>Origin</h5><p>Above the <a href="/articles/greater-sciatic-notch">greater sciatic notch</a> as a confluence of the gluteal veins and the pelvic tributaries described below.</p><h5>Course and termination</h5><p>Ascends out of pelvis, posterior to the internal iliac artery along the medial surface of psoas major to join the ipsilateral <a href="/articles/external-iliac-vein">external iliac vein</a> at pelvic brim anterior to the <a href="/articles/sacroiliac-joint">sacroiliac joint</a> to become the <a title="Common iliac vein" href="/articles/common-iliac-vein">common iliac vein</a>.</p><h5>Tributaries</h5><ul>
- +<li>rectal venous plexus</li>
-</li></ul>- +</li></ul><h4>Related pathology</h4><p>It is thought that thromboemboli from disease of the pelvic viscera or metastatic disease can spread superiorly as far as the <a title="Superior vena cava" href="/articles/superior-vena-cava">superior vena cava</a> via the communication between the lateral sacral veins and the vertebral venous plexuses<sup>1</sup>.</p>
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- internal iliac vein
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