Coeliac Artery Compression Syndrome: Symptoms and UK Management

Coeliac artery compression, frequently referred to in medical literature as Median Arcuate Ligament Syndrome (MALS), is a rare digestive condition. It occurs when the median arcuate ligament—a band of tissue in the diaphragm—is positioned too low, causing it to press firmly against the coeliac artery. The coeliac artery is a major vessel that provides oxygenated blood to the stomach, liver, and other upper abdominal organs.

This compression can restrict blood flow and irritate the surrounding coeliac plexus (a network of nerves). In the United Kingdom, patients often navigate a long journey to diagnosis because the symptoms frequently mimic more common conditions such as Irritable Bowel Syndrome (IBS), gastritis, or gallbladder issues. According to NICE guidelines, chronic abdominal pain requires a systematic approach to rule out malignancy and functional disorders before rarer vascular causes like this are considered.

The symptoms of coeliac artery compression are often chronic and can be debilitating. While they vary between individuals, the most reported signs include:

• Upper abdominal pain: Specifically in the epigastric region (below the ribs and above the navel).
• Pain after eating: Often starting within 10 to 30 minutes of a meal, which may last for several hours.
• Food fear: A psychological avoidance of eating because the subsequent pain is so severe.
• Unintentional weight loss: Resulting from reduced caloric intake.
• Nausea and bloating: Which can lead to a misdiagnosis of functional dyspepsia.

The pain is frequently described as a dull ache or a sharp, cramping sensation. Because the symptoms are associated with eating, many British patients initially try over-the-counter remedies like antacids or paracetamol, which rarely provide significant relief for vascular compression.

Medical research suggests that coeliac artery compression is typically an anatomical variation present from birth. However, symptoms may not manifest until adulthood. It is more commonly diagnosed in women between the ages of 20 and 50 and is often seen in individuals with a thin or slender build.

The exact reason why some people with this anatomical compression develop symptoms while others do not is still being studied. One theory is that the compression affects the nerves of the coeliac plexus, leading to 'neuropathic' pain, while another focuses on 'ischaemic' pain caused by reduced blood flow during the high-demand period of digestion.

If you are experiencing persistent stomach pain, your first port of call is usually a GP. In the UK, the diagnostic pathway follows a process of exclusion. Your doctor will likely order blood tests to check for inflammation or infection and may request an ultrasound of the gallbladder.

If common causes are ruled out, specialized vascular imaging is required. This typically includes:

• Duplex Ultrasound: To measure the velocity of blood flow in the coeliac artery during breathing in and out.
• CT Angiography (CTA) or MR Angiography (MRA): These provide detailed 3D images of the artery and the ligament to confirm the site of compression.

It is important to note that many healthy people have some degree of artery compression without pain, so a diagnosis is only reached when the imaging findings correlate exactly with the patient's clinical symptoms.

Navigating chronic digestive issues can be frustrating, especially when symptoms are intermittent or vague. You may find it beneficial to speak to a GP online if you have been suffering from persistent upper abdominal pain and want to discuss your history in detail without the rush of a traditional surgery appointment.

An online consultation allows you to:

• Present a detailed diary of your symptoms and 'food fear'.
• Discuss previous tests and why they may have come back 'normal'.
• Receive a referral for further specialist investigations or private imaging.
• Obtain a second opinion on chronic dyspepsia that is not responding to standard treatments.

Our clinicians provide a calm, evidence-based environment to review your digestive health against current NHS and NICE standards, ensuring you are on the right pathway for a definitive diagnosis.

The primary treatment for symptomatic coeliac artery compression is a surgical procedure known as median arcuate ligament release. This involves cutting the ligament to remove the pressure on the artery and the nerves.

Surgical Options

In the UK, this is increasingly performed using laparoscopic (keyhole) or robotic surgery, which offers a faster recovery time compared to open surgery. The goal is to restore normal blood flow and decompress the coeliac plexus nerves. Most patients report a significant reduction in pain and a return to normal eating habits shortly after the procedure.

Non-Surgical Support

While surgery is the only way to fix the physical compression, manageing the symptoms before surgery often involves dietary modifications (eating smaller, more frequent meals) and nerve-block injections administered by pain management specialists.