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How can a needle biopsy help diagnose pancreatic cancer?

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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.

A needle biopsy is a medical procedure used to diagnose pancreatic cancer by obtaining cells or tissues from the pancreas for pathological examination.12

During the procedure, a needle is inserted into the area of interest to collect a specimen. This can be done using a large cutting needle to retrieve a "core" of tissue or a small-gauge needle via fine-needle aspiration biopsy, which uses suction to draw tissue into the needle. Once collected, the material is fixed, sectioned into thin slices, and stained so that a pathologist can examine the cellular characteristics under a microscope to render a precise diagnosis.2

While this method is the simplest and least-disruptive way to obtain tissue for analysis, it is an invasive procedure associated with risks, including pancreatitis. Because the pancreas is located deep within the abdominal cavity, doctors often use imaging techniques to guide the procedure and ensure accuracy.1