Stones, Inflammation, or Something Worse?

Cut to the Chase: General Surgery Survival Series — Post 22

Three consults in one afternoon, and the same word sits in all three charts: gallstones. By evening, one patient has gone home with a clinic number, one has a morning OR slot, and one is getting an ERCP tonight. And the GI fellow did not sound thrilled about driving in.

Same word. Three different diseases, running on three different clocks.

“Gallstones” reads like a diagnosis, so it stops your thinking early. It isn't one. Plenty of people are walking around with stones they will never feel. A stone on an ultrasound is a finding. The diagnosis is where it's sitting.

So learn the map instead of the list. Bile leaves the liver on one main road, the common bile duct, headed for the duodenum. The gallbladder sits off to the side, on a short driveway called the cystic duct. Every disease on this spectrum is the same road system, blocked at a different point.

A stone that briefly plugs the driveway after a fatty meal gives you biliary colic. The gallbladder squeezes against the blockage, the patient hurts, steadily, for all the waves the name promises, and then the stone rolls back and the pain leaves. Completely.

Between attacks the belly is soft and the labs are clean. That patient has time: an elective cholecystectomy, measured in weeks.

Ask when the last attack ended, and make her name an hour. Pain that's still going at six hours has stopped being colic, and that changes who you call and when.

When the stone impacts in the cystic duct and stays, the gallbladder behind it inflames.

Now the pain persists, settles into the right upper quadrant, and brings company: fever, a climbing white count, a breath that stops when your hand presses under the ribs, Murphy's sign. The ultrasound confirms what the story already told you: thickened wall, fluid around it, a stone that won't move. The clock tightens to days: antibiotics, and a cholecystectomy this admission.

And notice which machine did that work: the ultrasound, not the CT. Plenty of stones sit at the same density as bile, so a CT can look pristine over a gallbladder full of rocks. Right upper quadrant pain gets an ultrasound first.

Notice what stayed quiet, though: the liver tests. Blocking the driveway inconveniences the gallbladder. Bile still flows down the main road.

Look at the bilirubin and alk phos on every gallbladder you're consulted on, even the ones that look routine. The cystic duct doesn't drain the liver, so if those are moving, the stone isn't where you think it is.

That's the pivot to something worse. A stone in the common bile duct, choledocholithiasis, shows up in the labs before it shows up in the patient. The bilirubin and alk phos climb, the duct measures wide, and the duct has to be cleared. Some of that happens by ERCP before the gallbladder comes out and some of it happens in the operating room, at the same sitting, and which one depends on who is available and what your surgeon does. Your job at 2 a.m. is to name the problem and get the right people on the phone.

An obstructed duct is standing water, and standing water gets infected.

Cholangitis, fever, jaundice, right upper quadrant pain, Charcot's triad, is the disease on this spectrum that kills. Add confusion and a soft blood pressure and you have Reynolds' pentad, which is less a physical finding than a pre-arrest announcement.

But the triad rules in; it doesn't rule out. All three line up in a minority of real cholangitis, and the patients least likely to show the full set are the ones you most need to catch: the old, the immunosuppressed, the already-septic, who run the quietest version of every finding. That's why the eponym gave way to the Tokyo Guidelines, which move on a lower bar: systemic inflammation, cholestatic labs, and a duct that looks obstructed on imaging. A fever and a rising bilirubin over a dilated duct is enough. You don't wait for the jaundice to become undeniable before you pick up the phone.

Start the antibiotics and call for drainage in the same ten minutes. The antibiotics do not empty the duct, and nobody downstream will move faster than the person who called first.

About ten years into practice, covering a partner's service over a weekend, I took sign-out on a man in his sixties admitted as cholecystitis. His bilirubin was 2.9 on arrival. I read it at ten that night and decided it could wait for the MRCP in the morning.

At rounds he was confused, mottled at the knees, pressure drifting down. The duct had been infected all night. He survived, after an ICU stay that one call to GI at ten would have prevented. The phone was on the desk next to the chart.

One more address. A small stone that travels the whole road can lodge at the ampulla and dam the pancreatic duct too. Now the epigastric pain bores straight through to the back and the lipase runs three times normal: gallstone pancreatitis.

The stone has often already passed by the time you're called, and the ultrasound can look nearly innocent. Mild gallstone pancreatitis still earns a cholecystectomy before discharge. The stone that passed has friends.

Check a lipase on every gallstone belly, including the ones that look like plain colic. The stone usually passes before anyone images her, and the lipase is the only thing left that will tell you it happened.

One night an add-on bilirubin will come back at 4.6, and the story you told on rounds twenty minutes earlier will quietly stop being true. Most trainees experience that as getting caught. It's the workup doing what you ordered it to do.

The ones who get in trouble aren't the ones whose story changed. They're the ones who liked their first story too much to check.

So when the next consult says gallstones, don't reach for the word. Ask where the stone is standing. The story tells you whether it's moving; the labs tell you which road it found.

Three charts, one word, and by six o'clock tomorrow you'll have sorted all three. Then there'll be a fourth on the list, and you'll open the labs before you walk down.

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What to Read Next: Post 23, “The Night Float Panic.” You can build this workup in daylight, with backup down the hall. Next: 2 a.m., the list is yours, and the pager doesn't care that you've never done this alone.