CA 19-9 is most commonly elevated in cancer of which organ?

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Multiple Choice

CA 19-9 is most commonly elevated in cancer of which organ?

CA 19-9 is a tumor marker most closely associated with pancreatic cancer; its levels rise most frequently when pancreatic ductal adenocarcinoma is present. This marker is produced by pancreatic ductal cells, and pancreatic tumors release it into the bloodstream, making it useful for monitoring disease course and treatment response. While elevations can occur with other GI cancers and benign conditions like biliary obstruction or pancreatitis, the strongest and most common association is with pancreatic cancer, which is why the correct choice is pancreatic.

CA 19-9 is a tumor marker most closely associated with pancreatic cancer; its levels rise most frequently when pancreatic ductal adenocarcinoma is present. This marker is produced by pancreatic ductal cells, and pancreatic tumors release it into the bloodstream, making it useful for monitoring disease course and treatment response. While elevations can occur with other GI cancers and benign conditions like biliary obstruction or pancreatitis, the strongest and most common association is with pancreatic cancer, which is why the correct choice is pancreatic.

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