What Are Pancreatic Pseudocysts?

Pancreatic pseudocysts are pockets of fluid that can form near the pancreas after inflammation or injury. They most often develop after pancreatitis, a condition that causes swelling and irritation of the pancreas.

The pancreas helps with digestion and blood sugar control. When it becomes inflamed, digestive fluids can leak and collect nearby, leading to a pseudocyst. Most pseudocysts are not cancerous, but some may need treatment if they grow larger or cause symptoms.

Pancreatic pseudocysts are usually caused by pancreatitis. Conditions and risk factors linked to pancreatitis include:

• Gallstones
• Heavy alcohol use
• High triglyceride levels
• Pancreatic injury
• Certain medications
• Autoimmune diseases
• Inherited conditions that affect the pancreas

Symptoms

Symptoms can vary depending on the size of the pseudocyst and whether it is causing pressure or irritation nearby.

Common symptoms include:

• Pain in the upper abdomen
• Back pain
• Nausea or vomiting
• Fever
• Bloating or swelling in the abdomen
• Feeling full quickly after eating

Some people may not notice symptoms at all. In these cases, the pseudocyst may be discovered during imaging for another health concern.

How Is It Diagnosed?

Your healthcare provider will review your symptoms, medical history, and overall health. A physical exam and imaging tests help confirm the diagnosis and rule out other pancreatic conditions.

Testing may include:

• Blood tests to check pancreatic enzyme levels
• CT scan
• MRI
• Abdominal ultrasound
• Endoscopic ultrasound or fluid sampling in some cases

These tests help determine the size of the pseudocyst and whether there are signs of infection, bleeding, or blockage.

How Is It Treated?

Treatment depends on the size of the pseudocyst, your symptoms, and whether complications are present.

Small pseudocysts that are not causing symptoms may only need monitoring with follow-up imaging. Treatment for pancreatitis, including fluids, pain relief, and nutritional support, is often part of care.

If the pseudocyst becomes large, painful, infected, or does not improve, additional treatment may be needed. Options can include:

• Endoscopic drainage
• Catheter drainage guided by imaging
• Surgery in more severe cases

Many people recover well with proper treatment and follow-up care. Managing the underlying cause of pancreatitis may help lower the chance of future problems.