Pediatric MALS Symptoms

National MALS Foundation Pediatric Portal

First things first, take a deep breath! When you find out you have MALS, people tend to go on a scavenger hunt for information which can be extremely overwhelming.   It can also be frustrating since there isn’t a lot of accurate information on the internet. The purpose of this portal is to help make learning a little easier and for the information to be from evidence based research and testimonials. When it comes to testing for MALS, surgeries and developing coping skills for living with a serious medical illness, we want to be able to provide as much help as possible. We hope that these Q&As will be able to ease your mind about everything that comes with a MALS diagnosis. This part of the website is made specifically for pediatric patients and their parents. Many MALS patients are under 18, but there's not much information when it comes to how best to treat them. Research studies are mostly done with adults, making it hard to tell if those statistics even apply to someone under 18.

Even though age is in your favor when it comes to healing, it's also worth addressing the impact of the physical, social and emotional aspects of your MALS journey. It can be confusing, as well as, make you feel sad, lonely and even angry as you see your peers living symptom free lives. MALS not only involves physical things that happen with your body, but can also impact you socially and emotionally. This is completely normal and does not mean you have a mental health problem! MALS symptoms can be debilitating and trying to cope with all of that while trying to maintain a normal academic and social life can take a toll on you emotionally. It is definitely not easy living with MALS. It’s also not fair when you are not taken seriously by the doctors who are supposed to help you. You are not alone in this problem as this happens to adult MALS patients as well. We know that thinking about surgery as a young person and a parent can be overwhelming and we want to be able to make this process less stressful and less scary for both. We hope this information can provide peace of mind as well as filling in the gaps the doctors may have missed. Every MALS patient is unique as are their stories and we want to provide as much solace as we can as you navigate on your MALS journey.

MALS Frequently Asked Questions

What is Median Arcuate Ligament Syndrome (MALS)?


MALS is a condition that happens when the Median Arcuate Ligament pushes down on the celiac artery and sometimes the nerves around the artery. This makes it hard for blood to flow normally. This ligament attaches to your diaphragm which is a muscular structure in your upper belly that moves up and down when you breathe. MALS can lead to awful GI symptoms, nausea, and pain. Most patients have their symptoms increase after eating, drinking, and/or exercise. It’s not a simple tummy ache.




What is the Celiac Artery and what does it do?


The celiac artery is part of your vascular system which helps spread blood and oxygen throughout the body. The celiac artery is the first (1) of the three (3) abdominal mesenteric arteries and focuses on a specific section of your digestive system. The parts that it feeds are the stomach, pancreas, liver, spleen and upper part of the duodenum. When blood isn’t flowing properly it can prevent an organ/s from functioning as they should which is why when the artery is compressed it can cause so many uncomfortable symptoms.




How do I receive a MALS diagnosis?


MALS is usually a diagnosis of exclusion. That means it is important to rule out other, more likely causes. Most patients will need to go through a full set of gastrointestinal (GI) tests just to make sure your symptoms aren’t from another illness. These tests look at how your esophagus, stomach, gallbladder, pancreas, liver and intestines are functioning. Very rarely will MALS show up on GI testing, so don’t get discouraged if the tests all come back as “normal”. At this point, you should be sent for further testing to look for MALS. These MALS-specific tests may include a wand (Mesenteric duplex ultrasound) that is rolled around on your belly to see how fast the blood flows through the arteries or a special x-ray machine (CTA) with or without a dye that takes pictures to see if any arteries are squished, a special magnetic machine (MRA) can do this too. Sometimes, you may need to have a special test that numbs the celiac nerves around the artery. This is called a celiac plexus block and it is sometimes used as part of the diagnosis process and sometimes part of the pain management treatment, but not always. The doctors will look at all your test results to see if you have MALS. It's important that the tests are done using the correct protocols necessary and should be done by someone experienced in looking for MALS. It's also important that all tests are read or interpreted by someone who understands the complexity of MALS and who knows exactly what to look for in the results. If not, you may be told you do not have MALS, when in fact you might.




Can you have a GI illness and still have MALS?


It’s not that uncommon for a MALS patient to have more than just MALS, some people have another GI illness too. But there are also times when MALS patients get misdiagnosed with other illnesses because of their MALS symptoms. Gastroparesis (GP) is not that uncommon for MALS patients to have. Some doctors will diagnose MALS patients with Irritable Bowel Syndrome (IBS), Acid Reflux, Chronic Vomiting Syndrome (CVS) and Dumping Syndrome. These are all syndromes that are a diagnosis made by exclusion which is similar to how you get a MALS diagnosis. It’s important that you know that the symptoms you have that result in a GI diagnosis may or may not be directly related to MALS. We see both. Some patients have a (GI) diagnosis, but the symptoms are actually caused by MALS. In other cases, there is an independent (GI) condition not related to MALS. This is why it’s so important to have various GI testing prior to surgery including being tested for Small Intestinal Bacterial Overgrowth (SIBO), Cdiff (diarrhea due a bacteria and inflammation), celiac disease, fecal elastase stool and follow-up with your Gastroenterologist after surgery if you continue to have digestive issues.





Tests That are Used to Help Diagnose MALS

The most frequently used tests in getting a MALS diagnosis are the Mesenteric Duplex Ultrasound, a CTA or MRA and the Catheter Angiography through the groin or arm. Sometimes, doctors will also ask that you undergo a celiac plexus nerve block, if they think it will help. Just remember that a celiac plexus block is not exclusive to MALS. It is used to help with pain management in other conditions like pancreatitis and pancreatic cancer. 

Mesenteric Duplex Ultrasound evaluates blood flow through the mesenteric arteries (celiac, superior and inferior) which supply blood to the digestive organs. Gas can make getting a good reading difficult because it blocks the blood flow image in the arteries. A gas relieving product may be recommended to take before the procedure. It is critical that this test be performed using inspiration and expiration to avoid false negatives. 

CT angiography (CTA) scan is a special kind of CT x-ray exam that focuses on the blood vessels, using a contrast material to make them show up clearly in the images. CTA is used to examine blood vessels in areas including the abdomen. It is critical that this test be performed using inspiration and expiration to avoid false negatives. 

Magnetic Resonance Angiography (MRA) or MRI scanner. Magnetic resonance imaging (MRI) is an advanced medical imaging technique that does not use x-ray or radiation. An MRA (a special type of MRI) is used to obtain detailed images of blood vessels and blood flow.

Catheter Abdominal Angiography with contrast dye. Angiography, angiogram, arteriogram are all terms used to identify a procedure that outlines blood vessels, usually arteries, in various areas in the body like the abdomen. A thin plastic tube, called a catheter is inserted into an artery through a small incision in the skin in the groin or arm. This tube is guided into the celiac artery. Contrast material is injected through the tube and images are captured. The doctor can also obtain pressure measurements which help determine how compressed or closed off the artery is and see how tortuous the blood flow is in that area compared to surrounding vessels. This test can determine if the artery is compressed and needs intervention. 

Celiac Plexus Block can be used to assist with a MALS diagnosis and or for providing pain relief.  The abdomen has many nerves that run through this area. There are also times when people have an unsuccessful block but still have success with surgery. This has recently been added to the MALS world and some doctors do not require or use it as a diagnostic test.

MALS Testing and Treatment Questions

What is Median Arcuate Ligament Syndrome (MALS)?


MALS is a condition that happens when the Median Arcuate Ligament pushes down on the celiac artery and sometimes the nerves around the artery. This makes it hard for blood to flow normally. This ligament attaches to your diaphragm which is a muscular structure in your upper belly that moves up and down when you breathe. MALS can lead to awful GI symptoms, nausea, and pain. Most patients have their symptoms increase after eating, drinking, and/or exercise. It’s not a simple tummy ache.




What is the Celiac Artery and what does it do?


The celiac artery is part of your vascular system which helps spread blood and oxygen throughout the body. The celiac artery is the first (1) of the three (3) abdominal mesenteric arteries and focuses on a specific section of your digestive system. The parts that it feeds are the stomach, pancreas, liver, spleen and upper part of the duodenum. When blood isn’t flowing properly it can prevent an organ/s from functioning as they should which is why when the artery is compressed it can cause so many uncomfortable symptoms.




How do I receive a MALS diagnosis?


MALS is usually a diagnosis of exclusion. That means it is important to rule out other, more likely causes. Most patients will need to go through a full set of gastrointestinal (GI) tests just to make sure your symptoms aren’t from another illness. These tests look at how your esophagus, stomach, gallbladder, pancreas, liver and intestines are functioning. Very rarely will MALS show up on GI testing, so don’t get discouraged if the tests all come back as “normal”. At this point, you should be sent for further testing to look for MALS. These MALS-specific tests may include a wand (Mesenteric duplex ultrasound) that is rolled around on your belly to see how fast the blood flows through the arteries or a special x-ray machine (CTA) with or without a dye that takes pictures to see if any arteries are squished, a special magnetic machine (MRA) can do this too. Sometimes, you may need to have a special test that numbs the celiac nerves around the artery. This is called a celiac plexus block and it is sometimes used as part of the diagnosis process and sometimes part of the pain management treatment, but not always. The doctors will look at all your test results to see if you have MALS. It's important that the tests are done using the correct protocols necessary and should be done by someone experienced in looking for MALS. It's also important that all tests are read or interpreted by someone who understands the complexity of MALS and who knows exactly what to look for in the results. If not, you may be told you do not have MALS, when in fact you might.




Can you have a GI illness and still have MALS?


It’s not that uncommon for a MALS patient to have more than just MALS, some people have another GI illness too. But there are also times when MALS patients get misdiagnosed with other illnesses because of their MALS symptoms. Gastroparesis (GP) is not that uncommon for MALS patients to have. Some doctors will diagnose MALS patients with Irritable Bowel Syndrome (IBS), Acid Reflux, Chronic Vomiting Syndrome (CVS) and Dumping Syndrome. These are all syndromes that are a diagnosis made by exclusion which is similar to how you get a MALS diagnosis. It’s important that you know that the symptoms you have that result in a GI diagnosis may or may not be directly related to MALS. We see both. Some patients have a (GI) diagnosis, but the symptoms are actually caused by MALS. In other cases, there is an independent (GI) condition not related to MALS. This is why it’s so important to have various GI testing prior to surgery including being tested for Small Intestinal Bacterial Overgrowth (SIBO), Cdiff (diarrhea due a bacteria and inflammation), celiac disease, fecal elastase stool and follow-up with your Gastroenterologist after surgery if you continue to have digestive issues.





Are there illnesses that are common for MALS patients to have?

MALS patients are all so different when it comes to our specific MALS symptoms. Oddly enough there are a few other illnesses and even surgeries we seem to commonly share. Just because fellow patients happen to have these illnesses doesn’t mean that every MALS patient does. Some people may have MALS but are otherwise healthy.

Some of the conditions seen in some MALS patients are:

  • Postural Orthostatic Tachycardia Syndrome (POTS)

  • Ehlers Danlos Syndrome (EDS)

  • Mast Cell Activation Syndrome  (MCAS)

  • Gastroparesis (GP)

It’s also common for MALS patients to have their gallbladder removed sometimes unnecessarily.

There are also a few that aren’t as common but also appear in our fellow MALS patients:

  • Pancreatitis

  • Superior Mesenteric Artery Syndrome (SMAS)

  • Nutcracker Syndrome (NCS)

  • Pelvic Congestion Syndrome (PCS)

  • May Thurner Syndrome (MTS)

How do I connect with fellow MALS patients and caregivers?

There are a few support groups for MALS patients specifically. They can mainly be found on Facebook MALSPals. There is also a MALS forum on Mayo Clinic Connect  Our community is small but it is incredibly compassionate and caring. It can be an incredible experience to connect with people who are going through the same thing you are. Most support groups have both the MALS patients and their caregivers. So you can hear about the MALS experience from each side. These groups were created to help us find each other. They have also become a safe haven for us to share our journeys with each other. They aren’t always happy stories but it does help to be able to share and read about fellow experiences.

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Copyright ©2020 National Median Arcuate Ligament Syndrome Foundation, Inc. All rights reserved. National MALS Foundation is a registered 501(c)(3) nonprofit organization. Please note that the National MALS Foundation provides the information on this website for the benefit of the MALS patient and clinician community. National MALS Foundation is not a medical provider or health care facility and thus can neither diagnose MALS nor endorse or recommend any specific medical treatments. Patients must rely on the personal and individualized medical advice of their qualified health care professionals before they seek any information related to MALS diagnosis and treatment.