Gallbladder Polyps: Types, Symptoms, and Management
Updated: 3 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
Source currency note: This guide reflects medical information reviewed in June 2026. Always confirm current guidance with your healthcare professional.
Quick Answer: What are gallbladder polyps?
Gallbladder polyps are growths in the gallbladder lining that form from cholesterol buildup, inflammation or abnormal cell growth, often found during unrelated tests. Most are not cancerous and cause no symptoms, though rarely they turn into cancer. They are diagnosed by ultrasound. Many need only follow-up ultrasounds, while symptoms or possible cancer lead to gallbladder removal. [4]
What the research says
Most polyps seen on ultrasound turn out to be benign. In a five-year review of 2,549 gallbladder removals at one community hospital, 98 of the 1,944 patients who had an ultrasound beforehand (5.0%) had a polyp reported, averaging 8.1 mm. Only 3 (3.1%) were adenomas on pathology, and most were benign findings such as cholesterol polyps, cholesterolosis, and cholecystitis. The authors concluded that ultrasound is poor at identifying true polyps and urged caution when basing decisions on ultrasound alone (Ostapenko et al., JSLS, 2020).
Polyp size and shape help predict neoplastic risk. In a prediction model built from 233 patients and validated in 225 others, age, gallstones, the blood marker CEA, polyp size, and sessile (flat) shape were independent predictors of a polyp's neoplastic potential. The model separated neoplastic from non-neoplastic polyps well (area under the curve 0.846 in the training group and 0.835 in the validation group) (Zhang et al., Journal of Clinical and Translational Hepatology, 2022).
Management guidelines trade sensitivity for specificity. Among 135 patients with polyps of 7 mm or larger who had their gallbladder removed (median size 12 mm), 20.7% had neoplastic polyps. The Society of Radiologists in Ultrasound guidelines had 62% sensitivity and 90% specificity, while the 2022 Joint European guidelines had 90% sensitivity and 41% specificity. In practice, the first would send fewer people to surgery and the second would catch more neoplastic polyps (Nanda et al., European Radiology, 2026).
Understanding Gallbladder Polyps
Gallbladder polyps are growths in the lining of the gallbladder. They can form from cholesterol buildup, inflammation, and abnormal cell growth. In most cases they are harmless and do not interfere with the gallbladder's job of storing bile, and many people never know they have them.
Feature | Description |
Nature | Most are noncancerous |
How common | Often found by chance during tests for other reasons |
Main types | Pseudopolyps and true polyps |
How they are found | Usually on an ultrasound or other imaging test |
Types of Gallbladder Polyps
There are two main types: pseudopolyps and true polyps.
Pseudopolyps (false polyps)
Pseudopolyps are the most common type, making up about 70% to 90% of cases. They are not cancerous.
Cholesterol foci: small cholesterol deposits that stick to the gallbladder lining. They are the most common type of gallbladder polyp and are not cancerous.
Adenomyomatosis: tiny pouches form in the lining and make it thicker. It is considered harmless.
Inflammatory polyps: ongoing inflammation of the gallbladder causes scar tissue that forms these polyps.
True polyps
True polyps are growths made of cells that keep growing when they shouldn't.
Adenomas: a common type, made of cells similar to those in the bile ducts. Most aren't cancerous, but a small number can turn into cancer.
Other noncancerous types: lipomas (fatty tissue), fibromas (fibrous tissue), and leiomyomas (muscle tissue).
Cancerous polyps: such as adenocarcinomas, which are rare.
Symptoms and Potential Causes
Gallbladder polyps usually don't cause symptoms. You may not know you have them until a healthcare provider finds them during a test for something else. If symptoms do happen, they might include:
Upper right abdominal pain that can come and go.
Nausea and vomiting.
Fever, if the gallbladder or bile duct becomes inflamed.
Trouble digesting fatty foods.
Jaundice, rarely, when a cancerous polyp blocks bile flow and the skin or eyes turn yellow.
Causes and risk factors
The cause depends on the type. Pseudopolyps can form from cholesterol buildup or long-term inflammation, and true polyps form when cells in the gallbladder lining grow more than they should.
Risk factor | Examples |
Age | Risk rises with age, especially after 50 |
Metabolic health | High cholesterol, obesity, and metabolic syndrome |
Other conditions | Gallstones, cholecystitis, cholangitis, hepatitis B, and primary sclerosing cholangitis (PSC) |
Genetic syndromes | Familial adenomatous polyposis (FAP) and Peutz-Jeghers syndrome |
Factors that raise the risk of cancerous polyps
Age over 60
Asian ancestry
Primary sclerosing cholangitis (PSC)
Polyps larger than 10 millimeters (mm)
A single polyp rather than many
A flat or broad-based (sessile) shape
Thickening of the gallbladder wall
Diagnosis and Clinical Evaluation
Providers often find gallbladder polyps during imaging tests done for other reasons. If your provider suspects a gallbladder problem, they will likely order an ultrasound.
Abdominal ultrasound: uses sound waves to create images of the gallbladder and is the main way polyps are found.
Endoscopic ultrasound (EUS): if the ultrasound results aren't clear, this gives a closer, more detailed view and can help tell harmless polyps from potentially dangerous ones.
What providers look at
Size: polyps larger than 10 mm carry a higher cancer risk.
Shape: flat or broad-based (sessile) polyps are more concerning than those on a stalk.
Number: cancerous polyps are more likely to appear as a single growth, while noncancerous polyps often appear in groups.
Management and Treatment Options
If you have no symptoms, treatment depends on the size of the polyp and your risk of cancer.
Polyp size and risk factors | Next steps |
Smaller than 6 mm, no risk factors | You may not need follow-up. |
About 6 to 9 mm, no risk factors | Follow-up ultrasounds at six months, one year, and two years are likely. If the polyps don't grow, you may not need more follow-up. |
About 6 to 9 mm, with risk factors | Your provider may recommend surgery. |
10 mm or larger | Your provider will likely recommend surgery because of a higher cancer risk. |
Surgery
If you have symptoms, your provider may recommend removing your gallbladder (cholecystectomy).
Laparoscopic cholecystectomy: the most common approach. The surgeon makes a few small cuts and inserts a tiny, lighted camera and tools to remove the gallbladder.
Open cholecystectomy: may be recommended if the polyps may be cancer. The surgeon makes a larger cut under the right ribcage to remove the gallbladder, nearby tissue, and lymph nodes if needed.
It might take some getting used to, but you can live a full life without a gallbladder.
Outlook
Most gallbladder polyps don't go away on their own, though some small cholesterol polyps may shrink or become undetectable over time. They usually don't cause problems and aren't cancerous. Most polyps grow slowly, with a single polyp usually growing less than 1 to 2 mm per year. If a polyp is cancerous, early care can make a big difference.
Conclusion
Gallbladder polyps are common, and in most cases they are a benign finding that needs only periodic monitoring. Size, shape, and your personal risk factors decide whether to watch or to operate, and the outlook is excellent for most people, including those who need surgery.
Next step: If you have been told you have a gallbladder polyp, or you have ongoing upper abdominal pain, ask your provider for the polyp's size and shape and agree on a follow-up schedule.
Frequently Asked Questions
Are gallbladder polyps cancerous?
Most are not. Pseudopolyps, which make up about 70% to 90% of cases, aren't cancerous. True polyps, such as adenomas, can rarely turn into cancer, and cancerous polyps themselves are rare.
Can gallbladder polyps go away on their own?
Most polyps don't go away on their own, although some small cholesterol polyps may shrink or become undetectable over time.
What size gallbladder polyp is concerning?
Size matters together with risk factors. Polyps 10 millimeters (mm) or larger usually lead to a recommendation for surgery because of the higher cancer risk, and polyps of about 6 to 9 mm with risk factors may also prompt a surgery recommendation.
Can I live without a gallbladder?
Yes. The gallbladder stores bile but isn't essential. It might take some getting used to, but you can live a full life without it.
How often should gallbladder polyps be monitored?
For polyps of about 6 to 9 mm without risk factors, follow-up ultrasounds are likely at six months, one year, and two years. If the polyps don't grow, you may not need more follow-up. Polyps smaller than 6 mm without risk factors may not need follow-up.
How fast do gallbladder polyps grow?
Most grow slowly. A single polyp usually grows less than 1 to 2 mm per year, and many stay the same size or even shrink. Cancerous polyps may grow faster, and quick growth can lead to a recommendation for surgery.
What is a “sessile” polyp?
A sessile polyp is flat or broad-based against the gallbladder wall. This shape is one of the factors that raises the risk of cancer.
What is the difference between a polyp and a gallstone?
A polyp is a growth attached to the gallbladder lining. A gallstone is a hardened mass of bile or cholesterol that forms inside the gallbladder. Having gallstones is also a risk factor for developing polyps.
Is gallbladder removal a major surgery?
Laparoscopic cholecystectomy is the most common way to remove the gallbladder. Surgeons make a few small cuts and use a tiny camera and tools. An open cholecystectomy, with a larger cut under the right ribcage, may be recommended if the polyps may be cancer.
Do gallbladder polyps cause symptoms?
Most gallbladder polyps cause no symptoms and are found by chance on an ultrasound done for another reason. See a provider promptly if you have pain in the upper right belly, fever, or yellowing of the skin or eyes.
Related Reading
Cholecystectomy (Gallbladder Removal): Surgery, Recovery and Risks explains gallbladder removal surgery, recovery and risks.
Gallbladder Cancer: Symptoms, Diagnosis, Staging, Treatment and Support covers the symptoms, staging and treatment of gallbladder cancer.
Abdominal Ultrasound: Why It's Done, How to Prepare, What to Expect and Results describes the imaging test used to find and track gallbladder polyps.
Gallbladder Adenomyomatosis: Types, Symptoms, and Management explains another gallbladder wall change that can look like a polyp.
References
Ostapenko A, Liechty S, Kim M, et al. Accuracy of ultrasound in diagnosing gallbladder polyps at a community hospital. JSLS. 2020;24(4). PMID 33100819. https://doi.org/10.4293/JSLS.2020.00052
Zhang X, Wang J, Wu B, et al. A nomogram-based model to predict neoplastic risk for patients with gallbladder polyps. Journal of Clinical and Translational Hepatology. 2022;10(2):263-272. PMID 35528981. https://doi.org/10.14218/JCTH.2021.00078
Nanda BP, Moloney BM, Gershon A, et al. Resected gallbladder polyps: comparison of the 2022 Society of Radiologists in Ultrasound and Joint European Societies guidelines' diagnostic performance. European Radiology. 2026;36(1):462-472. PMID 40711552. https://doi.org/10.1007/s00330-025-11826-4
Cleveland Clinic. Gallbladder polyps. Cleveland Clinic. June 8, 2026. https://my.clevelandclinic.org/health/diseases/21821-gallbladder-polyps
Medical disclaimer
This article was prepared for general information only and is not a substitute for professional medical advice.
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