Venous Compression Syndromes

Understanding Hemorrhoids and Your Treatment Options

Venous Compression Syndromes?

Venous Compression Syndromes are a common but often underrecognized cause of chronic pain and circulation issues, occurring when veins are compressed by nearby structures and blood flow becomes restricted. The two most well-known conditions are May-Thurner Syndrome (MTS) and Nutcracker Syndrome (NCS). This can lead to symptoms such as leg swelling, pain, blood in the urine, pelvic discomfort, and varicose veins, which often worsen with standing or activity and improve with rest.
Traditional treatment may begin with conservative measures like compression, pain management, or observation, which can help control symptoms but do not address the underlying vein compression. In more severe cases, surgical options exist, but they can involve longer recovery times and greater impact on the body.
We specialize in minimally invasive treatments for venous compression syndromes. Using advanced imaging and catheter-based techniques, our interventional radiologists can relieve the compression and restore healthy blood flow. Procedures such as vein stenting are highly effective, require only small incisions, and allow most patients to return to normal activities quickly.
Minimally invasive treatment is ideal for patients experiencing persistent symptoms who are seeking a safe, effective, and non-surgical solution.
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What Are Venous Compression Syndromes?

  • May-Thurner Syndrome (MTS): Left iliac vein compressed by the right iliac artery → leg swelling, pain, DVT risk, sometimes pelvic congestion.
  • Nutcracker Syndrome (NCS): Left renal vein compressed between the aorta and superior mesenteric artery → blood in urine, flank pain, pelvic congestion, varicose veins
  • Often underdiagnosed; both are treatable with minimally invasive procedures by interventional radiologists.

Symptoms

May-Thurner Syndrome:
  • Left leg swelling, heaviness, pain
  • Varicose veins on left leg
  • History of left-sided DVT
Nutcracker Syndrome:
  • Blood in urine (hematuria)
  • Left flank or abdominal pain
  • Pelvic congestion symptoms, varicose veins
  • Orthostatic proteinuria
Key point: Symptoms worsen with standing or activity and improve with rest.

Diagnosis & Imaging

  • Clinical evaluation: Medical history, physical exam, lab tests (urinalysis for NCS).
  • Imaging:
  • Ultrasound/Doppler (screening)
  • CT or MR venography/angiography (detailed vein anatomy)
  • Intravascular ultrasound (IVUS) or venography during intervention
  • Diagnostic criteria: Significant vein compression with corresponding symptoms.

Treatment Options

Conservative:
  • Compression stockings, leg elevation, exercise, observation (for mild symptoms).
Minimally Invasive/Interventional:
  • Iliac vein stenting (MTS) – opens compressed vein, high success rate, rapid recovery.
  • Left renal vein stenting (NCS) – minimally invasive, improves hematuria and pain.
Surgical Options:
  • LRV transposition or autotransplantation (NCS) – for severe or complex cases.
Important: Discuss all options with a vascular specialist or interventional radiologist. Treating underlying compression is essential before addressing related pelvic congestion.
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