Scan report says 'gallbladder sludge' but NO stones. Is sludge even a real thing, does it turn into stones, and does it mean I need the gallbladder out?

Bit of an odd one because everyone else on here seems to have actual stones and I apparently don't. Had an ultrasound last month for some vague upper tummy discomfort after meals, not proper attacks like people describe, more a heavy dull ache that hangs about for an hour. Report came back "gallbladder contains a layer of sludge, no calculi, wall normal". GP read it out, said "hmm, sludge", and then said it was probably nothing but she'd refer me to a surgeon to be safe. That was three weeks ago and I've heard nothing and I have been googling like a lunatic.

The thing is half of what I read says sludge is basically pre-gallstones and you'll definitely get stones eventually, and the other half says it's a nothing finding that sonographers mention to cover themselves. Some forum in America had a woman who had her gallbladder out for sludge alone and swears it fixed her, and another bloke who said his just vanished on the next scan.

Also, and this might be relevant, I did a very strict fasting diet for most of the spring, 5:2 plus skipping breakfast basically every day, and lost about a stone and a half. Did I do this to myself?? And does that change whether it goes away? Sorry, that's about four questions.

Not a doctor but for what it's worth mine started as "sludge" on a scan about three years before the stones showed up, and I was told to ignore it, and I did, and then three years later I was in A&E with a proper attack. So it CAN turn into stones. Whether it always does, no idea. I'd want that surgeon appointment chased up though.

threestones54 said:

Did I do this to myself??

Oh the fasting thing is real, I'm afraid. Mine turned up on a scan during my second pregnancy, which the sonographer said is really common, and it had gone by the six month check after the baby. The consultant at the time explained it to me as the gallbladder not being squeezed out regularly, so the bile just sits there and goes thick, and pregnancy and skipping meals both do that. So there's a decent chance yours is the diet, and there's a decent chance it clears now you're eating normally.

Mine came back with actual stones years later mind, so I'm not the poster child for "it always goes away". But the pregnancy sludge did genuinely vanish on its own.

Sludge is a real finding, it is not a nothing, and it is not a sentence either. The direct answer to your main question is that sludge on its own, without symptoms typical of the gallbladder, is not a reason to remove a gallbladder, and the usual plan is a repeat ultrasound after an interval to see what it has done. Sludge that is causing genuine biliary pain, or that has caused cholecystitis or pancreatitis, is treated like symptomatic gallstones, and for that the guidance is laparoscopic cholecystectomy.

What it is: bile that has concentrated to the point where cholesterol crystals and pigment granules have come out of solution, suspended in mucus. It sits in the lowest part of the gallbladder on the scan and shifts when you roll over, and unlike a stone it casts no shadow. It is the stage before a stone rather than a stone. In the follow-up studies we have, which are small and mostly old, a large share cleared on its own, some persisted or came and went, and roughly 5 to 15% went on to form gallstones over the following few years. A smaller minority developed symptoms or a complication. Kev's story and Maria's are both perfectly typical, which is exactly why one scan cannot tell you which you are.

On the fasting: yes, a prolonged pattern of skipped meals and rapid weight loss is one of the recognised triggers, along with pregnancy, serious illness, being fed by a drip, and a few medicines. A gallbladder that is not being prompted to empty by meals containing some fat lets bile stagnate. When the trigger has clearly ended, sludge often clears with it. Nothing you can take dissolves it, and I would be wary of anyone selling a flush. The site has a fuller piece on what gallbladder sludge is and when it matters, and the reasoning for leaving a quiet gallbladder alone is the same as for silent gallstones found by chance.

The part I cannot settle from here is your symptom. A dull hour-long heaviness after meals is not the classic gripping biliary colic, but it is not nothing either, and whether the two are connected is a judgement for the surgeon who sees you, with the scan and your history in front of them, possibly with blood tests and a repeat scan first. It is worth chasing the referral, and worth writing down when the aches happen and what you ate, because that record is more useful in clinic than the scan report on its own.

The symptom diary tip is a good one. I took one to my first appointment and the surgeon said it told him more than the ultrasound did. Also, regular meals with a bit of fat in them was the one piece of advice I got that made sense once someone explained the "gallbladder needs squeezing" thing, and it's the opposite of what I'd have guessed.

Update for anyone who finds this later. Chased the referral, saw the surgeon last week. Bloods normal, he wasn't convinced the heaviness was biliary at all, thinks it may be reflux, and he's booked a repeat ultrasound for the autumn rather than doing anything. Told me to stop the fasting pattern and eat three actual meals, which I have. Mildly annoyed at myself for the spring diet but relieved not to be booked for surgery on the strength of one word on a report. Will post again after the rescan.