Introduction

What is Banti's Syndrome?

Banti's Syndrome, also known as portal hypertensive splenomegaly, is a rare condition where the main feature is an abnormally enlarged spleen, which happens because of blockages or increased resistance in the veins that drain the spleen. This disruption to the normal blood flow causes high blood pressure in the veins that carry blood to the liver (hepatic portal veins), a condition known as portal hypertension. This increased pressure can also lead to a wide range of additional related health problems.¹

The elevated portal vein pressures can be caused by several factors, including:¹

• Portal vein obstruction: This can result from disorders or birth defects that lead to inflammation and scarring of the portal vein
• Splenic vein obstruction: blockages or narrowing of the splenic vein, which can prevent normal blood flow from the spleen
• Chronic venous congestion: ongoing blood pooling and buildup in the veins, which can gradually increase pressure

Symptoms and Presentation of Banti's Syndrome 

The main symptom of Banti's Syndrome is an enlarged spleen, which can often be felt as a mass in the upper left side of the abdomen. Other common symptoms include:¹

• Anaemia and fatigue: feeling tired and weak due to low red blood cell counts
• Increased infections: higher risk of infections from low white blood cell counts
• Easy bruising and bleeding: More frequent bruising and bleeding due to low platelet levels

In advanced cases, Banti's Syndrome can lead to additional complications such as:¹

• Liver enlargement and cirrhosis, where the liver becomes larger and develops scarring
• Ascites is where abnormal fluid buildup in the abdomen occurs
• Esophageal varices are where the veins in the oesophagus become dilated, which can cause bleeding

These complications may result in symptoms like abdominal pain, poor appetite, and gastrointestinal bleeding.

The exact cause of Banti's Syndrome isn’t completely clear, but it’s thought to involve a mix of factors, such as infections, blood clotting issues, and autoimmune responses that damage the small blood vessels in the liver and spleen. This damage leads to high portal pressure and an enlarged spleen, which is seen in this condition.

Diagnostic Approach

Banti's Syndrome is diagnosed through a detailed medical evaluation that includes clinical findings, lab tests, and specialised imaging studies.

The process starts with a thorough patient history and physical exam. Doctors will look for an enlarged spleen and signs of portal hypertension, such as bleeding from swollen veins or fluid buildup in the abdomen (ascites).²

Blood tests are essential for diagnosis. A complete blood count (CBC) can reveal low levels of red blood cells, white blood cells, and platelets, which are common in Banti's Syndrome due to overactive spleen function. Other tests may include liver function tests, blood clotting studies, and markers indicating blood cell breakdown.²

Advanced imaging techniques help confirm the diagnosis and evaluate the extent of the condition. An abdominal ultrasound can show an enlarged spleen and check the portal vein. More detailed imaging, such as an MRI scan can provide a more clearer view of the blood vessels in the spleen and portal system as they use magnetic fields and radio waves to create detailed images of specific areas of the body which helps doctors to assess the size of the spleen, the condition of the liver, and the patency of the portal vein (how open the vein is).¹

Conditions with Similar Symptoms

Comparing the symptoms of similar conditions with Banti’s syndrome can aid with differential diagnosis, as they can bear similarities. Differential diagnosis is a process doctors use to figure out what illness or condition a patient has when there are several possibilities/diseases that could explain the symptoms. When a patient shows up with certain symptoms, there might be many different conditions that could cause those symptoms. The doctor needs to narrow down the options to find the correct diagnosis. To do this, the doctor will look at the patient's symptoms, medical history, physical exam results, and any test results. They will then compare this information with the characteristics of various possible conditions to see which one is the best match.¹

For example, Primary biliary cholangitis (PBC) and Banti's Syndrome can have similar symptoms, particularly liver-related issues like an enlarged spleen (splenomegaly) and liver damage. However, they are distinct conditions with different underlying causes and progression. Understanding these differences is crucial for a differential diagnosis. Although the exact cause of PBC is unknown, it is possible that it involves an autoimmune process leading to bile duct damage, whereas Banti's Syndrome involves vascular issues leading to portal hypertension and spleen enlargement. By comparing these aspects, doctors can more accurately diagnose which condition is present.¹

Other conditions with similar symptoms include Gaucher disease and Felty Syndrome.

Gaucher disease is a rare inherited disorder where a lack of the enzyme glucocerebrosidase leads to the buildup of harmful fats (lipids) in the body, particularly in the bone marrow, spleen, and liver. Symptoms can vary widely but may include an enlarged liver and/or spleen, low red blood cell levels (anemia), low platelet counts (thrombocytopenia), and bone problems.¹

Felty syndrome is an uncommon form of rheumatoid arthritis, which is known for causing painful, stiff, and swollen joints. Key symptoms of Felty syndrome include an enlarged spleen and low levels of certain white blood cells (neutrophils), which can increase the risk of infections. Other symptoms may include tiredness, fever, weight loss, and patches of skin discoloration.¹

Management and Treatment Strategies

The primary goals in managing Banti's Syndrome are to address the two main clinical issues - gastrointestinal bleeding and symptoms related to an enlarged spleen.

Addressing Gastrointestinal Bleeding

The risk of variceal bleeding is a major concern in Banti's Syndrome due to the portal vein hypertension. Endoscopic procedures are often the first line of treatment. For example, variceal ligation involves using a banding technique to close off enlarged veins in the esophagus, and sclerotherapy ​​involves injecting a solution to scar and destroy the enlarged veins. Endoscopic sclerotherapy is efficacious in 95% of the patients, with a recurrence rate of around 20% and 3% recurrent bleeding.³

If endoscopic methods are not effective or feasible, more invasive surgical options may be needed. For example, portosystemic shunt surgery involves creating a surgical pathway to redirect blood flow and lower portal pressure, which can help prevent bleeding from enlarged esophageal veins. It is usually considered when less invasive treatments don't work. For patients with severe liver damage or cirrhosis from Banti’s Syndrome, a liver transplant may be necessary. Selecting suitable candidates and careful monitoring after the transplant are crucial. Additionally, patients may have to receive a splenectomy, which involves removing the severely enlarged spleen. This may help to relieve symptoms caused by an overactive spleen, but it requires careful follow-up to manage the higher risk of infections.³

Managing Complications from an Enlarged Spleen

As a reminder, the increased pressure in the portal veins can lead to a wide range of additional related health problems such as anaemia (low red blood cells), leukopenia (low white blood cells), and thrombocytopenia (low platelets). These are addressed via:³

• Blood transfusions and iron supplements can help increase red blood cell levels
• Platelet transfusions or medications that boost platelet production can help raise low platelet counts

To lower the portal hypertension, patients may also receive beta-blockers, which work by slowing down the heart rate and reducing the force of the heart's contractions, which in turn lowers blood pressure in the portal vein. By decreasing portal pressure, beta-blockers significantly reduce the risk of the oesophageal varices from rupturing and causing life-threatening bleeding.³

By combining endoscopic treatments, medications, and surgical interventions, doctors can effectively manage the main issues of Banti's Syndrome—gastrointestinal bleeding and complications from spleen enlargement. The goal is to provide relief from symptoms and prevent further problems.

FAQs

What are the risks associated with Banti’s Syndrome?

Banti’s Syndrome can lead to serious complications if not properly managed, including severe anaemia, life-threatening bleeding from esophageal varices, and liver failure. Early diagnosis and appropriate treatment are essential to reduce these risks.¹

Can Banti’s Syndrome be cured?

There is no cure for Banti’s Syndrome, but with proper management, many of the symptoms and complications can be controlled. Treatment focuses on improving the patient’s quality of life and preventing serious complications.

Is Banti’s Syndrome hereditary?

Banti’s Syndrome is not typically hereditary.²