What is splenomegaly and when is an enlarged spleen dangerous

Your ultrasound report says "splenomegaly", and the first thing you want to know is how bad that is. Here is the short answer. Splenomegaly means an enlarged spleen. It is a sign, not a disease of its own. The spleen grows when something in the body makes it work harder than usual: an infection, a liver problem, a blood disorder. There are many possible causes, and most of them can be treated.

Below we explain what counts as an enlarged spleen, why it happens, which symptoms deserve attention and when you should see a doctor today rather than next week. No scare stories. But no "just wait and see" either.

The spleen sits in the upper left part of your belly, behind the stomach and under the lower ribs. In adults it is about the size of a fist. A doctor usually cannot feel it during a routine exam, so the size is checked on ultrasound. For adults, our ultrasound department uses up to 120 x 60 mm as the normal range.

One number does not settle anything. Even with a normal size, the doctor looks at the tissue, the blood vessels, any spots or lesions and how the organ changes between scans. It works the other way too. About 3% of healthy, slim people have a spleen tip you can feel, with no disease at all, according to the MSD Manual.

There is no single accepted grading scale. Use the table below as a starting point for a talk with your doctor, not as a diagnosis:

Your spleen filters blood and is part of the immune system. It clears out old and damaged red blood cells, traps bacteria and stores platelets. The logic is simple. The spleen grows when it has too much work to do. Or when blood pools inside it and cannot drain freely.

What causes it most often? MedlinePlus, the medical encyclopedia of the US National Library of Medicine, names four big groups: infections, liver disease, blood disorders and cancer. In countries with a mild climate, liver disease with high pressure in the portal vein, infections and hemolytic anemias lead the list. Malaria and leishmaniasis enlarge the spleen too. In Ukraine doctors think of them only after a trip to the tropics.

No online quiz can tell you why your spleen is enlarged. The causes range from a common virus to a chronic illness. Your doctor puts the picture together from several pieces: your symptoms, blood tests, liver tests, ultrasound and sometimes a CT or MRI scan.

Liver and spleen: why they change together

Blood from the spleen flows into the portal vein and on to the liver. When the liver hardens and scars, as it does in cirrhosis, blood struggles to get through. Pressure in the portal vein rises, and the spleen fills up. Doctors see this chain all the time: liver cirrhosis leads to portal hypertension, and that in turn enlarges the spleen. This is why so many people with liver disease also have a big spleen. The extra blood has nowhere else to go.

If both the liver and the spleen are enlarged, treatment does not start with the spleen. Doctors look for what is damaging the liver: viral hepatitis, fatty liver disease, alcohol, an autoimmune process, bile flow problems. At the same time they bring down the portal pressure with medicine. In some cases they discuss surgery, up to a liver transplant.

At Oberig clinic these patients are treated by the Gastro Center and the Center for Liver, Pancreas Surgery and Transplantation. Our Gastro Center doctors follow the guidelines of the European and American liver associations (EASL and AASLD) and are members of both. Surgeon Oleh Kotenko, MD, PhD, wrote his doctoral thesis on surgery for complications of cirrhosis. He has performed over 340 living related donor liver transplants and over 4,000 liver resections.

Often there are none. The enlargement shows up on an ultrasound done for something else, such as gallstones or a routine checkup.

When symptoms do appear, they are vague and look like a dozen other conditions:

• feeling full after a few bites, because the spleen presses on the stomach
• heaviness or a dull ache under the left ribs, sometimes in the left side of the back
• pain that spreads to the left shoulder
• tiredness, shortness of breath on exertion, pale skin from anemia
• frequent infections, easy bruising, bleeding gums

The last two points have a name: hypersplenism. The enlarged spleen traps and destroys too many blood cells. It becomes a vicious circle. The more cells it traps, the bigger it gets, and the bigger it gets, the more cells it destroys, as the MSD Manual explains. That is why a complete blood count matters as much as the scan.

No, not by itself. Splenomegaly is a symptom. Most of the time it comes from an infection, liver disease or anemia, not a tumor.

You should know the other side too. Some blood disorders, such as lymphomas and leukemias, do enlarge the spleen. A massive spleen is more often linked to them. So if your spleen is large and your blood count shows changes in white cells or platelets, your doctor will refer you to a hematologist. That is not a verdict. It is the fastest way to rule out something serious and put your mind at rest if all is well.

The main risk is a rupture. An enlarged spleen sticks out from under the ribs. Its capsule is stretched tight. A blow that a normal spleen would survive can cause internal bleeding. A rupture can happen right after an injury or weeks later, the NHS warns.

Mild enlargement is no reason to panic. It is a reason to put boxing, football, wrestling and weightlifting on hold until your doctor says yes. After mono, this rule lasts at least a month and until an ultrasound shows a normal size again. About half of people with mono get an enlarged spleen, and it peaks in the second and third week.

Call an ambulance (103) right away if:

• sudden, severe pain hits under the left ribs, especially after a blow, a fall or a car accident
• the pain spreads to your left shoulder
• you feel dizzy, your heart races, you break into a cold sweat or turn pale
• your belly is tense and hurts to touch

In children the spleen reacts to infections faster than in adults. Viruses are the most common cause, above all Epstein-Barr virus, which causes mono. About half of children catch it before age five. Often it passes like a normal cold, with a fever and swollen glands in the neck.

Less often, inherited anemias are to blame. One example is hereditary spherocytosis: red blood cells have an abnormal round shape, and the spleen destroys them too fast. Normal sizes differ for children. Doctors judge them by age and height, so adult numbers do not apply to a child's report. If a blood disorder means the spleen has to come out, our surgeons perform laparoscopic spleen removal in children through a few small incisions.

First the doctor examines your belly. They press under the left ribs and tap the area. Hands make mistakes, though. A physical exam picks up only 60-70% of the enlarged spleens that ultrasound later confirms.

So ultrasound is the main test. There is no radiation. It takes 20-30 minutes and shows the size, the structure of the organ and blood flow in the vessels. If the picture is unclear, a CT or MRI scan follows. MRI helps most when the doctor needs to check for a clot in the splenic or portal vein.

Blood tests run in parallel. A complete blood count shows anemia and the levels of white cells and platelets. Liver tests show whether the liver is driving the problem. Next come tests for infections if needed, and a hematologist sometimes orders a bone marrow test. A needle biopsy of the spleen itself is rare, because the tissue bleeds easily. The blood work, not the number on the scan, tells you what is behind the enlargement.

There are no pills "for the spleen". Doctors treat whatever made it grow. After that, the spleen usually shrinks, often back to a normal size.

The cause shapes the whole plan. That may mean antiviral therapy for hepatitis, treatment for anemia, therapy for a blood disorder or lowering the pressure in the portal vein. After mono, time and a gentle routine without sport are usually enough.

Doctors avoid removing the spleen (splenectomy) unless they must. Without it, you are less protected against some bacteria. Surgery comes up when the spleen is damaged after an injury, when it destroys so many blood cells that severe anemia or bleeding develops, or when it is so big that it hurts and presses on nearby organs. Gentler options exist too. One is embolization: a doctor partly blocks the spleen's blood supply through a catheter, and the organ shrinks.

After a splenectomy you need vaccines against pneumococcus, meningococcus and Haemophilus influenzae, plus a flu shot every year. Herbs and "cleanses" do not help here. They will not fix cirrhosis or lymphoma, and you lose time you could spend on real treatment.

Can an enlarged spleen go back to normal?

Yes, once the cause is dealt with. After an infection it usually takes a few weeks. With liver or blood disease it depends on how well the main condition is under control.

Can I exercise with an enlarged spleen?

Easy walking is usually fine. Contact sports, martial arts and heavy weights should wait until your doctor confirms a normal size on ultrasound. The risk of rupture is real.

Which doctor should I see about splenomegaly?

Start with a GP or family doctor. They will order tests and send you to a hepatologist, hematologist or infectious disease doctor if needed. Bring your ultrasound report.

Do I need a special diet?

There is no "spleen diet". Food choices depend on the cause. With liver disease you give up alcohol and cut down on fatty food. If the spleen presses on your stomach, smaller and more frequent meals feel easier.

What if the enlargement was found by chance?

Don't panic, and don't put it off. Get a complete blood count and liver tests, then show the results and the ultrasound report to a doctor. Basic tests often point to the cause.

Does splenomegaly go away on its own after mono?

Usually, yes. The spleen shrinks as you recover. A follow-up ultrasound tells you when it is safe to get back to sport.

If your report mentions "splenomegaly", the heaviness under your left ribs won't go away or your blood count shows changes, don't try to sort it out alone. At Oberig clinic we do an abdominal ultrasound on an expert-class ACUSON Sequoia (Siemens) scanner, and you get the report right after the scan. With the results, you can see a hepatologist or gastroenterologist at our Gastro Center and plan further tests without extra ones you don't need.

Book an appointment by phone at +38 044 521 30 03 or online.