Answers
Gallbladder polyp on ultrasound: is it serious?
Short answer
Most gallbladder polyps are small, harmless growths of cholesterol found by chance on an ultrasound. A few can turn into cancer. The size of the polyp is the main guide: small polyps are usually watched with repeat scans, and polyps of 10 mm or more are usually removed with the gallbladder.
What the size means
Polyps that are flat or broad-based (sessile), or that come with a thickened gallbladder wall, need more careful review.
- Under 6 mm: usually harmless; often followed with repeat ultrasound for some years
- 6 to 9 mm: followed closely, and surgery is considered if there are risk factors
- 10 mm or more, or a polyp that grows: removal of the gallbladder is usually advised
Risk factors that matter
- Age over 50
- Indian ethnicity, as gallbladder cancer is more common in parts of India, especially the Gangetic plains
- Gallstones along with the polyp
- Primary sclerosing cholangitis
What to do
Keep the follow-up ultrasound dates your doctor suggests, ideally at the same centre. Most polyps never cause problems. If the polyp causes pain or comes with gallstones that cause pain, surgery is usually recommended.
When to see a doctor sooner
See a gastroenterologist promptly for a polyp of 10 mm or more, one that has grown, or a polyp with jaundice, weight loss or a thick gallbladder wall on the scan.
Food and gallbladder polyps
Eat more
- A balanced diet with vegetables, fruits, dal and whole grains
- Steady weight control, which also lowers the chance of gallstones
- Regular meals, without long fasting gaps
Cut down
- Crash diets and very rapid weight loss, which can lead to gallstones
- Large, fried meals if you also have gallstones that cause pain
- Unproven 'polyp dissolving' remedies
Good to know
- No food, medicine or remedy shrinks a gallbladder polyp.
- Many small 'polyps' are cholesterol deposits that stay the same for years.
Common questions
Can a gallbladder polyp disappear?
Sometimes a small 'polyp' is not seen on a later scan, because it was a sludge ball or a cholesterol deposit. True polyps usually stay.
How often should I repeat the ultrasound?
Often at 6 months, then yearly for a few years, depending on the size and your risk. Your doctor will set the schedule.
Is a 4 mm polyp worrying?
Usually not. Polyps under 6 mm are almost always harmless, and some guidelines suggest only occasional checks.