Pancreatic cancer kills most of the people it touches. About 52,740 Americans will die from the disease in 2026, against roughly 67,530 new diagnoses, and the overall five-year survival rate is stuck at 13 percent.
Much of that toll traces back to late detection. There is no routine screening test, and most symptoms surface only when the disease is already advanced.
One warning sign stands out as an earlier clue. Jaundice, a yellowing of the skin and the whites of the eyes, appears among the first symptoms in most patients, according to the American Cancer Society.
A population-based case-control study of 120 pancreatic cancer patients and 180 matched controls in the San Francisco Bay area linked jaundice to the disease with an odds ratio of 20 (95% CI, 8.0 to 49). The study, led by Elizabeth A. Holly and colleagues at the University of California, San Francisco, and published in Clinical Gastroenterology and Hepatology in 2004, ranked jaundice among the strongest signals alongside pale stools and appetite loss.
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What to look for on your skin, in your eyes, in the toilet
The yellowing typically starts in the whites of the eyes and can spread to the skin. Darkening urine is often the very first visible change, according to the American Cancer Society.
Stools may turn light-colored or gray as the bile duct becomes blocked, and can become greasy enough to float. Itchy skin is common as bilirubin, the yellow pigment carried in bile, builds up.
Jaundice can arrive alongside several other early warning signs of pancreatic cancer that most people brush off, including unexplained weight loss, back pain and new digestive trouble.
Why the pancreas can turn you yellow
The pancreas sits deep in the belly, near the top of the small intestine. The common bile duct runs through the head of the pancreas on its way to the intestine, carrying bile that helps digest fats.
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When a tumor grows in the head of the pancreas, it can squeeze that duct shut. Bile cannot reach the intestine, bilirubin backs up in the blood, and the skin and eyes take on a yellow cast.
Because that mechanical blockage happens while tumors are still small, jaundice can appear before pain does. Tumors in the body or tail of the pancreas usually do not cause jaundice until later, which is one reason those cancers are so often caught late.
When to see a doctor
Jaundice has many causes, and most of them are not cancer. Gallstones, hepatitis and other liver conditions are far more common.
Even so, painless yellowing of the eyes or skin, especially when it comes with dark urine or pale stools, warrants a same-week call to a doctor rather than a wait-and-see approach.
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The five-year survival rate for pancreatic cancer caught while still localized is 44 percent, compared with 3 percent once it has spread to distant organs, according to the American Cancer Society.
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This article is made and published by Jesper Bengtson, who may have used AI in the preparation.