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Which pancreatic tumors are most likely to cause obstructive jaundice?

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An anatomical illustration of the human pancreas shows its location near the stomach and intestines, a detailed cross-section highlighting ducts and the islet of Langerhans, and an inset of pancreatic tissue histology with labeled alpha, beta, and delta cells. — pancreatic cancer The human pancreas is composed of two main types of tissue: acinar cells and islets of Langerhans. The acinar cells produce digestive enzymes, which are secreted into tiny ducts that feed into the pancreatic duct. Islets of Langerhans are clusters of cells that secrete hormones such as insulin and glucagon directly into a capillary network, which also joins the pancreatic duct.

Pancreatic tumors located in the head of the pancreas are the most likely to cause obstructive jaundice.1

This occurs because the anatomical position of the pancreatic head allows a tumor to compress or obstruct the biliary tract, preventing the normal flow of bilirubin and leading to the characteristic yellowing of the skin and mucous membranes. While pancreatic cancer typically arises from the ductal system, the specific clinical presentation of jaundice is highly indicative of involvement in the head of the organ.12