Skip to main contentLast updated: 07-Nov-2026
Dr Harsh Shah
MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Registered with Gujarat Medical Council, Reg. No. G-38738
Gallbladder Surgeon
Dr. Jivraj Mehta Hospital, Vasna, Ahmedabad · 18 years of experience
In short
A polyp of 6 to 9 mm with no other worry is usually scanned at 6 months, 1 year and 2 years. If nothing changes, the scans stop.
A polyp of 5 mm or less often needs no regular scans at all. One repeat scan is added only when the first report leaves a doubt.
Growth of 2 mm or more, a thicker wall or new pain ends the watching. The gallbladder is then removed by keyhole surgery.
Tests, risk factors and the operation for polyps are covered on our gallbladder polyps page. This post answers one question: how often a small polyp should be scanned, and for how long.
Watching means a planned set of repeat ultrasounds, each compared with the last, until the polyp has stayed the same for long enough.
Most small polyps are cholesterol bumps on the inner wall. They are harmless. A few are true growths, and a scan cannot always tell the two apart on one day.
Time tells them apart. A harmless bump stays the same size. A growth tends to get bigger. So the repeat scan is the test, and the dates matter as much as the scan.
For most small polyps without a risk factor, the common plan is a scan at 6 months, again at 1 year, and again at 2 years.
| What the report shows | Usual scan plan | What comes next |
|---|---|---|
| 5 mm or less, thin wall, no risk factor | Often no regular scans, or one repeat scan if there is a doubt | Stop if the repeat scan is unchanged |
| 6 to 9 mm, no risk factor | Scan at 6 months, 1 year and 2 years | Stop if the size is the same at 2 years |
| 6 to 9 mm, with a risk factor | Watching is not the usual advice | Surgery is usually planned |
| Growth of 2 mm or more | No more watching | Surgery is planned |
| New pain, vomiting or yellow eyes | Scan sooner than planned | Your surgeon reviews you at once |
These gaps follow commonly used international advice. Your surgeon may shorten them for you, for example if you are older or the polyp sits flat on the wall.
Use the same centre and the same reader each time, fast for six hours before the scan, and ask that the report give the size in millimetres.
Ultrasound can read a polyp one or two millimetres bigger or smaller on different days. That is only a difference in measuring, and it is why a change of 1 mm is not treated as growth.
If you are unsure whether your report describes a polyp or a stone, read our post on polyp or stone first. A stone moves when you turn on the couch, but a polyp does not.
A risk factor makes your surgeon scan sooner, or advise surgery. The ones that matter most are age over 60, a flat base, a thick wall and gallstones.
People who come from South Asia are also considered to have a higher chance of gallbladder disease than many other groups. Your surgeon keeps this in mind when setting the dates. Our post on polyp size and when surgery is advised lists these risk factors in full.
If the polyp is unchanged in size and shape after two years of scans, most surgeons stop regular scanning and keep it for symptoms only.
Stopping the scans does not mean the polyp has gone. It means it has shown that it is harmless. If you get new symptoms later, you should be seen again.
Pain in the upper right belly, repeated vomiting, yellow eyes or fast weight loss should never wait for the next scan date.
A scan date is a plan for a quiet polyp. It is not a limit on when you can ask for help. Call us if something changes, and bring your last report.
If surgery is advised, the whole gallbladder is removed through small cuts. You can read how this goes in our post on keyhole surgery for a gallbladder polyp.
Ask for the exact size, how it compares with the last scan, and the date and place of the next scan.
If your first report just says “polyp seen” and you feel worried, our post on a polyp on your ultrasound explains what to do next.
With no risk factor, the common plan is an ultrasound at 6 months, 1 year and 2 years. Your surgeon may change the dates to suit your age and the shape of the polyp.
Often not. A polyp of 5 mm or less is nearly always a cholesterol bump. One repeat scan may be added if the first report leaves a doubt.
It is better not to. A polyp that is changing can cause no symptoms for a long time. The scan is the only way to see growth early.
Yes, a little. Different machines and readers can differ by a millimetre or two. Using the same centre makes the comparison fair.
Yes, usually for about six hours. A gallbladder that is full of bile shows the wall and any polyp much more clearly.
Most surgeons stop if the polyp is the same in size and shape after two years. You should still be seen again if new symptoms appear.
Growth of 2 mm or more is a warning. It usually leads to advice for keyhole removal of the gallbladder, since a growing polyp cannot be called safe.
For the full picture of polyp care, start at the gallbladder polyps page. For questions before you travel, call +91-63555-64601.
Dr Harsh Shah — Dr. Jivraj Mehta Hospital, Vasna, Ahmedabad
Dr. Jivraj Mehta Hospital, Dr Jivraj Mehta Marg, Vasna, Ahmedabad 380007.
Consultations, review of reports and scans, operations and follow-up. OPD Monday to Saturday, 9 am to 5 pm.
Appointments: +91-63555-64601 · +91-63590-11009 · Hospital 079-2663 6363
Directions to the hospital · WhatsApp +91-63555-64601
Told that your small gallbladder polyp only needs watching, and unsure what that means week to week? Dr Harsh Shah writes out your scan dates, explains what to compare each time, and tells you which change should bring you back early. Bring every earlier ultrasound report to the visit. You can also call, or message us on WhatsApp. Call +91-63555-64601 Ask on WhatsApp
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