The main tributaries of the external iliac vein include:
What is Iliac Vein Compression Syndrome? Iliac vein compression syndrome (also called May-Thurner Syndrome) occurs when the left iliac vein is externally compressed by the right common iliac artery. This condition increases the chances of extensive symptomatic DVT involving the entire leg.
pelvisThe external iliac veins are blood vessels in your pelvis. Your pelvis is the part of your skeletal system between your lower torso (trunk) and legs. It sits just above where your legs and hips connect. Your external iliac veins send blood that no longer has oxygen from your lower body back to your heart to get oxygen.
The external iliac vein is the continuation of the femoral vein as it passes upward behind the inguinal ligament. At the level of the sacroiliac joint, it unites with the hypogastric vein to form the common iliac vein.
ICD-10-CM Diagnosis Code Q96 Q96.
What is iliac vein compression? Iliac vein compression, also known as May-Thurner syndrome, occurs when the main vein of your left leg – the left iliac vein – becomes constricted by the main artery in your right leg – the right iliac artery.
The exit point of the external iliac arteries is lateral to the insertion point of the inguinal ligament on the pubic tubercle, approximately one-third the distance from the pubic tubercle to the anterior superior iliac spine. Distal to the inguinal ligament, the external iliac artery becomes the common femoral artery.
The union of the internal and external iliac veins creates the common iliac vein, while the inferior epigastric vein drains into the external iliac vein and anastomoses from the superior epigastric vein. The primary function of these veins is to drain deoxygenated blood and return this blood to the heart.
May-Thurner syndrome is a rare vascular condition that affects a vein in your pelvis. It occurs when a nearby artery compresses the left iliac vein. This vein brings blood from your pelvis and legs back up to your heart. The compression prevents blood from flowing properly, leading to narrowing and scarring.
A venogram, also known as venography, is an x-ray exam that is performed to examine the health of the veins — typically in your legs. During a venogram, your doctor will inject a contrast dye into the vessels to examine how blood is flowing through your veins.
ICD-10 code: I87. 2 Venous insufficiency (chronic)(peripheral)
Iliac vein stenosis is a clinical condition resulting from external compression of the iliocaval venous unit with the consequent remodeling of the vascular wall, hemodynamic alterations, and predisposition to venous thrombosis.
The cause of obstruction or narrowing may be due to blood clotting (thrombosis) or non-thrombotic as in May-Thurner syndrome. A deep vein thrombosis can result in complete or partial blockage, whereas narrowing is typically due to compression from the spine, or more rarely a cyst, growth, or cancer.
Iliac vein compression syndrome, also know as May-Thurner syndrome (MTS), is caused by both mechanical and physiologic factors; the chronic pulsatile compression of the left common iliac vein (LCIV) by the right common iliac artery (RCIA) stimulates the formation of fibrotic adhesions that can cause partial or complete ...