Greasy, pale, floating stools — what steatorrhoea actually means

Doctors call it steatorrhoea — stool that contains more fat than it should, because the fat in a meal was not broken down and absorbed the way it normally is. It has a recognisable set of features, and most people who have it notice more than one at once: the stool is pale, sometimes almost putty-coloured; it looks greasy or oily, occasionally leaving a film on the water; it is bulky and produced in larger amounts than usual; it is unusually foul-smelling, even by the ordinary standards of an unpleasant bathroom trip; and it can be hard to flush, sometimes floating rather than sinking.

Digesting fat properly needs two things working together: bile from the liver, which breaks fat into smaller droplets, and enzymes from the pancreas, which then break those droplets down chemically so the gut can absorb them. Steatorrhoea happens when either of those is missing or reduced — which is why it can appear alongside jaundice, when bile cannot reach the gut, or on its own, when the pancreas itself is not making or delivering enough enzyme, a state called pancreatic exocrine insufficiency.

This matters for more than comfort. Fat that is not absorbed takes calories and fat-soluble vitamins with it, which is why steatorrhoea so often travels with weight loss and tiredness even when someone is eating a reasonable amount. It is also one of the more embarrassing symptoms to bring up, and one of the most useful, because unlike pain or fatigue it points fairly directly at what is wrong. For the wider picture, see our pancreatic cancer guide.

• It has lasted more than a couple of weeks without an obvious trigger like diet or a recent infection.
• Your eyes or skin have yellowed, or your urine has darkened. See dark urine and pale stools — what they mean.
• You are losing weight alongside it. Fat and calories are being lost with every affected meal.
• You feel exhausted or breathless more than the stools alone would explain — malabsorbed vitamins and minerals can contribute.
• There is a persistent ache in the upper abdomen or back.
• You are not sure how it adds up. This pattern is explained in more depth in dark urine and pale stools — what they mean.

1. 1

   A stool test for pancreatic enzyme

   A simple stool sample measures a pancreatic enzyme called elastase, which directly shows whether the pancreas is delivering enough enzyme into the gut. A low result confirms exocrine insufficiency and points the rest of the work-up towards the pancreas specifically.

   In-house at CION
2. 2

   Liver function blood tests

   These show whether bile flow is affected, which distinguishes a bile-duct problem from a purely pancreatic one, and picks up early jaundice before it is visible.

   In-house at CION
3. 3

   Coeliac blood screening

   A quick blood test rules in or out coeliac disease, which is common, under-recognised and produces a very similar pattern of malabsorption.

   In-house at CION
4. 4

   An ultrasound, and a contrast CT if needed

   Ultrasound looks first for gallstones and bile-duct dilation. Where the picture is not explained, or points towards the pancreas itself, a contrast CT on a dedicated pancreatic protocol gives the detailed view the pancreas needs.

   In-house at CION
5. 5

   Endoscopy, where a blockage is suspected

   Where imaging suggests something is physically obstructing bile or enzyme flow, endoscopic ultrasound gives the closest view of the pancreas and duct, with a biopsy if tissue confirmation is needed.

   Coordinated with specialist endoscopy partners

Whatever the underlying cause turns out to be, pancreatic enzyme replacement is the direct treatment for the symptom itself. It is taken as a capsule with every meal and snack, timed to the food rather than swallowed separately, and the dose is adjusted against how well the stools and comfort respond — not fixed in advance.

Most people notice a genuine change: stools return towards normal, the bloating and discomfort after eating ease, and weight often stabilises or begins to recover because more of what is eaten is actually being absorbed. It is one of the more satisfying things to get right, because the improvement is usually visible within a couple of weeks rather than requiring months of patience.

Where a blockage of bile or enzyme flow is found and needs relieving directly — a stent to open a narrowed duct, for instance — that is coordinated with our specialist gastroenterology and endoscopy partners. Where treatment of an underlying disease is needed, what is appropriate depends on the whole picture; that framework is set out on pancreatic cancer treatment in Hyderabad.

Medical disclaimer: This page explains what steatorrhoea can mean and how it is investigated and treated, and is reviewed by a CION medical oncologist with reference to NCCN guidance for pancreatic exocrine insufficiency. It is general information, not a diagnosis. Most steatorrhoea has a benign, treatable cause. Blood tests, CA 19-9, pancreatic-protocol CT, MRI/MRCP, medical oncology, radiation oncology, nutrition and pancreatic-enzyme support and supportive care are delivered by CION; endoscopic ultrasound and biopsy, ERCP, biliary and duodenal stenting, coeliac plexus block and all pancreatic surgery are coordinated with specialist HPB, gastroenterology and endoscopy partner centres and may be billed there.