Complaints & connections · borters.ch
Angina abdominalis · Ischaemia mesenterica chronica · Syndroma ligamenti arcuati mediani
Pain reliably shortly after eating, stronger with larger portions, with fear of eating and weight loss — and all the usual investigations normal. Then the belly vessels belong looked at.
Also known as: abdominal angina · chronic mesenteric ischaemia · median arcuate ligament syndrome · MALS · Dunbar syndrome · coeliac artery compression syndrome
Open in the tool — with search and all the links →This compilation is for information and replaces neither medical diagnosis nor treatment. If you have symptoms, see a doctor.
Digesting is work, and work needs blood: after a meal the blood flow to the gut rises several times over. If the supply does not keep up, pain arises — by the same principle as angina at the heart, only in the belly. The pattern is therefore very characteristic: dull, cramping pain around the navel or in the upper belly, fifteen to sixty minutes after eating, stronger the larger the portion, with fear of eating and a weight loss that cannot be explained. Two quite different roads lead there. The first is arteriosclerosis of the three belly arteries, usually after the age of sixty, almost always in smokers and almost always together with narrowings at heart or legs; because the gut is fed by three vessels that are connected to each other, complaints only appear once at least two of them are narrow. The second is median arcuate ligament syndrome: a tendon-and-muscle band of the diaphragm sits too low and presses on the coeliac trunk, the uppermost of the three arteries, when breathing out. Those affected here are mostly young, slim people, more often women, often between twenty and forty — and the complaints can change with breathing and with body position. On this second road much is still open: the narrowing is also found in people without any complaints, and whether the pain comes from the blood flow or from the irritated nerve network beside it is not conclusively settled. What both roads share is that they can be treated and that on average they are overlooked for years — because gastroscopy, gallbladder ultrasound and colonoscopy stay normal and nobody looks at the vessels.
Two weeks: time of the meal, time of the pain, size and fat content of the portion, weight once a week. Exactly this record is what prompts the question about the vessels — no blood value does that.
An ultrasound with flow measurement, fasting and again after a test meal. It is without radiation, takes half an hour and answers the question for most people already.
In median arcuate ligament syndrome the narrowing often shows only on breathing out. If only one measurement is made it is missed — this hint belongs said before the examination takes place.
Less at once means less need for blood at once. That does not remove the cause but makes the time until the workup bearable and slows the weight loss.
Operating on someone with marked weight loss and a low albumin brings more complications. Sip feeds, small protein-rich portions and, in severe cases, feeding through a vein belong to the preparation.
With the furring-up form smoking is the strongest single driver, and it acts on all three vessel areas at once. A stent without stopping smoking closes up again far more often.
Anyone with a narrowing here almost always has one elsewhere too. The look at heart, neck artery and leg arteries belongs to the same appointment.
With sudden, very severe belly pain and a soft belly every hour counts. Eat nothing and drink nothing, straight to the emergency room — do not wait for an appointment.
Because the narrowing also occurs in people without complaints and the benefit of the procedure is judged differently, a second opinion is usual and sensible here. It speaks neither for nor against the operation — it makes sure both sides are heard.
If the pain does not grow with the size of the portion, no weight is lost and the vessels are in order, it is more likely the movement or the sensitivity of the gut. That too can be treated — differently.
No drug widens a narrowed abdominal artery. Blood thinners and statins hold the situation and protect the other vessels, they do not change the narrowing. What removes it is a stent or a bypass — and the pain after eating is then usually gone at once, because the blood supply is enough again. In median arcuate ligament syndrome no drug works: there a ligament presses on the vessel from outside, and only cutting it changes anything.
The pain begins fifteen to thirty minutes after eating and lasts one to three hours — that time course is the identifying mark, because after a meal the gut’s need for blood doubles to triples. Symptoms usually appear only once two of the three supplying vessels are narrowed. The weight loss comes from fear of eating, not from poor absorption. In median arcuate ligament syndrome, mostly younger, slim people are affected, and the pain changes with breathing.
A small plate is fine, a large meal is not — and a fatty meal least of all. This dependence on the amount sets the picture apart from almost everything else that hurts after eating.
Anyone who knows it will hurt afterwards eats less — not from loss of appetite but from experience. The weight loss follows from that and is often wrongly read as the first sign of a tumour.
Age over sixty, smoking, high blood pressure, high cholesterol, diabetes — and narrowings already known at the heart or the leg arteries. With this combination the belly is just one more place of the same process.
Young, slim people, more often women between twenty and forty, without vessel risks. The complaints can also come with exertion, change with body position and grow stronger on breathing out. Sometimes a flow murmur can be heard in the upper belly that changes with the breathing.
A narrowing of the uppermost belly vessel is also found on imaging in people who never had any complaints. So with the diaphragm band treatment only follows after the ordinary causes have been ruled out — and the diagnosis stays one of image and complaints matching.
A sudden, very severe belly pain out of all proportion to what can be felt — the belly stays soft —, often with atrial fibrillation or after a heart attack: that is the acute blockage and an emergency in which hours decide the fate of the bowel.
Pain that comes independently of eating, pain at night with no link to the meal, fever, blood in the stool, a cycle-dependent pattern, or a point that gets stronger when the belly wall is tensed. Then other roads lead further.
The value that makes visible the undernourishment that grows out of the fear of eating. A low albumin worsens the outlook of any operation and therefore belongs built up beforehand.
Anaemia sharpens the bottleneck further, because the same blood carries less oxygen. It is not a side finding here but part of the problem.
Eating little over months empties the store, and with the arteriosclerotic form silent blood losses from the damaged lining come on top.
With the arteriosclerotic form lowering the LDL is part of the treatment, whether or not a stent is placed. The same deposits almost always sit at heart and legs as well.
An unrecognised diabetes drives arteriosclerosis in every vessel area and at the same time causes delayed stomach emptying, which can imitate the same picture.
Usually normal with the chronic form — one of the reasons the search does not go on. A clear rise together with violent pain points to the acute form.
The loss of muscle mass is the real problem here, not the kilos lost. Protein-rich small portions spread across the day hold more than one large meal, which hurts anyway.
Eating little often means drinking little too. Good blood flow needs enough volume — too little fluid sharpens the bottleneck further.
After months of reduced intake both stores empty. And anaemia worsens exactly what this is about: the transport of oxygen into a gut that already gets too little.
With longer undernourishment it is regularly missing, and muscle weakness is among the consequences — exactly what one needs least before a procedure.
Anyone avoiding fatty food because it hurts most also takes up less of vitamins A, D, E and K. That is worth measuring before it becomes a second problem.
Clearly worthwhile and well supported when deficient — vegan, older adults, certain drugs. No energy boost without a deficiency.
Clearly worthwhile and well studied when deficient; fewer data for the wider uses. Fat-soluble — check blood levels at high doses.
After eating the gut needs more blood — up to twice as much. If the vessels are narrowed, the pain arises exactly then: 15 to 60 minutes after the meal, the stronger the larger it was. This is why those affected eat less and less and lose weight.
Diabetes and smoking are the two biggest influences on these vessels — the same as at the heart and the legs. Anyone with claudication in the legs often has this vessel area involved too.
After eating the gut needs more blood — with narrowed vessels the pain appears. Smaller portions need less extra flow; many do better with 6 small meals than with three.
Fear of the pain leads to eating less — weight loss is common in this picture and a problem in itself. Small energy-dense meals counter it.
As with claudication in the leg, movement encourages collateral circulation. With pain after eating it is done between meals, not afterwards.