Pancreatic Pseudocyst: Causes, Symptoms, and Treatment
Medically reviewed by Sumiran Racherla, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Pancreatic Pseudocyst?
A gastroenterologist, a doctor who treats diseases of the digestive system, usually cares for a pancreatic pseudocyst. A surgeon, a doctor who does operations, may also help when drainage by surgery is needed. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is a pancreatic pseudocyst?
A pancreatic pseudocyst is a fluid-filled sac in the belly that arises from the pancreas. The sac may also hold tissue from the pancreas, enzymes, and blood. Enzymes are chemicals that help the body digest food.
The pancreas is an organ located behind the stomach. It makes the enzymes that the body needs to digest food. It also makes the hormones insulin and glucagon.
Symptoms
Symptoms can start within days to months after an attack of pancreatitis. Pancreatitis happens when the pancreas gets inflamed. Symptoms include:
- Bloating of the belly.
- Constant pain or a deep ache in the belly, which may also be felt in the back.
- Nausea and vomiting.
- Loss of appetite.
- Trouble eating and digesting food.
A doctor may feel a lump in the middle or left upper part of the belly.
Causes and who gets it
Pancreatic pseudocysts most often develop after an episode of severe acute pancreatitis. Many things can cause pancreatitis. The most common causes are gallstones, heavy alcohol use, genetic disorders of the pancreas, and some medicines.
A pseudocyst can also happen in someone with long-term (chronic) pancreatitis, most often due to alcohol abuse. It can also happen after an injury to the belly, more often in children.
A pseudocyst forms when the ducts, which are the tubes in the pancreas, are damaged. Then fluid with enzymes cannot drain.
How doctors diagnose it
The health care provider will feel your belly for a pseudocyst. Tests that may help find one include an abdominal CT scan, an abdominal MRI, and an abdominal ultrasound. Another test is an endoscopic ultrasound (EUS). For it, a tube with a camera and a light is passed down into the stomach.
Doctors also need to make sure the sac is not a pancreatic cancer that started in a cyst. That kind of cancer has a worse outcome.
Treatment
Treatment depends on the size of the pseudocyst and whether it is causing symptoms. Many pseudocysts go away on their own. Pseudocysts that last more than 6 weeks and are larger than 5 centimeters (about 2 inches) across may need treatment. Size and time do not always mean treatment is needed. This is most true for a person with no symptoms whose pseudocyst is not getting bigger.
Possible treatments include:
- Drainage through the skin using a needle, most often guided by a CT scan.
- Drainage with an endoscope, using endoscopic ultrasound.
- Surgical drainage, which makes a connection between the cyst and the stomach or small intestine. It may be done with a laparoscope. This is a thin, tube-like tool with a camera and light on one end.
Doctors drain fluid if a person has an abscess or an infected pseudocyst. They also drain a large pseudocyst that causes pain or bleeding. The outcome is generally good with treatment.
When to see a doctor
Tell a doctor if you have belly pain, bloating, nausea, or vomiting after an attack of pancreatitis. A pseudocyst can become infected, and then a pancreatic abscess can develop. It can also press on nearby organs.
A rupture, which means the sac breaks open, is a medical emergency. Call 911 or go to the emergency room if you have severe belly pain, trouble breathing, or nonstop vomiting. Also go if you vomit blood, faint, or have signs of shock, such as a rapid heartbeat or fever and chills.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either type of doctor can review your history of pancreatitis, arrange scans, and refer you to a gastroenterologist or surgeon. They can also help with follow-up visits after treatment.
Common questions
Can a pancreatic pseudocyst go away on its own?
Yes, many pseudocysts go away on their own. Treatment depends on the size of the pseudocyst and whether it causes symptoms. A pseudocyst that stays for more than 6 weeks and is larger than 5 centimeters may need treatment.
Is a pancreatic pseudocyst the same as cancer?
No, a pseudocyst is a fluid-filled sac, not cancer. Doctors still need to make sure it is not a pancreatic cancer that started in a cyst, because that kind has a worse outcome.
Is a pancreatic pseudocyst dangerous?
It can be. A pseudocyst can become infected, press on nearby organs, or break open. A rupture is a medical emergency. The outcome is generally good with treatment.
Can a pancreatic pseudocyst be prevented?
It depends. The way to prevent pseudocysts is to prevent pancreatitis. If gallstones cause the pancreatitis, you may have surgery to remove the gallbladder, which is called a cholecystectomy.
Sources
- MedlinePlus - Pancreatic pseudocyst
- National Institute of Diabetes and Digestive and Kidney Diseases - Treatment for Pancreatitis
- National Institute of Diabetes and Digestive and Kidney Diseases - Symptoms & Causes of Pancreatitis
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
