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If a person has signs and symptoms that might be caused by pancreatic cancer, certain exams and tests will be done to find the cause. If cancer is found, more tests will be done to help determine the extent (stage) of the cancer.
Your doctor will ask about your medical history to learn more about your symptoms. The doctor might also ask about possible risk factors, including smoking and your family history.
Your doctor will also examine you to look for signs of pancreatic cancer or other health problems. Pancreatic cancers can sometimes cause the liver or gallbladder to swell, which the doctor might be able to feel during the exam. Your skin and the whites of your eyes will also be checked for jaundice (yellowing).
If the results of the exam are abnormal, your doctor will probably order tests to help find the problem. You might also be referred to a gastroenterologist (a doctor who treats digestive system diseases) for further tests and treatment.
Imaging tests use x-rays, magnetic fields, sound waves, or radioactive substances to create pictures of the inside of your body. Imaging tests might be done for a number of reasons both before and after a diagnosis of pancreatic cancer, including:
The CT scan makes detailed cross-sectional images of your body. CT scans are often used to diagnose pancreatic cancer because they can show the pancreas fairly clearly. They can also help show if cancer has spread to organs near the pancreas, as well as to lymph nodes and distant organs. A CT scan can help determine if surgery might be a good treatment option.
If your doctor thinks you might have pancreatic cancer, you might get a special type of CT known as a multiphase CT scan or a pancreatic protocol CT scan. During this test, different sets of CT scans are taken over several minutes after you get an injection of an intravenous (IV) contrast.
CT-guided needle biopsy: CT scans can also be used to guide a biopsy needle into a suspected pancreatic tumor. But if a needle biopsy is needed, most doctors prefer to use endoscopic ultrasound (described below) to guide the needle into place.
MRI scans use radio waves and strong magnets instead of x-rays to make detailed images of parts of your body. Most doctors prefer to look at the pancreas with CT scans, but an MRI might also be done.
Special types of MRI scans can also be used in people who might have pancreatic cancer or are at high risk:
Ultrasound (US) tests use sound waves to create images of organs such as the pancreas. The two most commonly used types for pancreatic cancer are:
This is an imaging test that looks at the pancreatic ducts and bile ducts to see if they are blocked, narrowed, or dilated. These tests can help show if someone might have a pancreatic tumor that is blocking a duct. They can also be used to help plan surgery. The test can be done in different ways, each of which has pros and cons.
Endoscopic retrograde cholangiopancreatography (ERCP): For this test, an endoscope (a thin, flexible tube with a tiny video camera on the end) is passed down the throat, through the esophagus and stomach, and into the first part of the small intestine. The doctor can see through the endoscope to find the ampulla of Vater (where the common bile duct empties into the small intestine).
X-rays taken at this time can show narrowing or blockage in these ducts that might be due to pancreatic cancer. The doctor doing this test can put a small brush through the tube to remove cells for a biopsy or place a stent (small tube) into a bile or pancreatic duct to keep it open if a nearby tumor is pressing on it.
Magnetic resonance cholangiopancreatography (MRCP): This is a non-invasive way to look at the pancreatic and bile ducts using the same type of machine used for standard MRI scans. Unlike ERCP, it does not require an infusion of a contrast dye. Because this test is non-invasive, doctors often use MRCP if the purpose is just to look at the pancreatic and bile ducts. But this test can’t be used to get biopsy samples of tumors or to place stents in ducts.
Percutaneous transhepatic cholangiography (PTC): In this procedure, the doctor puts a thin, hollow needle through the skin of the belly and into a bile duct within the liver. A contrast dye is then injected through the needle, and x-rays are taken as it passes through the bile and pancreatic ducts. As with ERCP, this approach can also be used to take fluid or tissue samples or to place a stent into a duct to help keep it open. Because it is more invasive (and might cause more pain), PTC is not usually used unless ERCP has already been tried or can’t be done for some reason.
For a PET scan, you are injected with a slightly radioactive form of sugar, which collects mainly in cancer cells. A special camera is then used to create a picture of areas of radioactivity in the body.
This test is sometimes used to look for spread from exocrine pancreatic cancers.
PET/CT scan: Special machines can do both a PET and CT scan at the same time. This lets the doctor compare areas of higher radioactivity on the PET scan with the more detailed appearance of that area on the CT scan. This test can help determine the stage (extent) of the cancer. It might be especially useful for spotting cancer that has spread beyond the pancreas and wouldn’t be treatable by surgery.
This is an x-ray test that looks at blood vessels. A small amount of contrast dye is injected into an artery to outline the blood vessels, and then x-rays are taken.
An angiogram can show if blood flow in a particular area is blocked by a tumor. It can also show abnormal blood vessels (feeding the cancer) in the area. This test can be useful in finding out if a pancreatic cancer has grown through the walls of certain blood vessels. Mainly, it helps surgeons decide if the cancer can be removed completely without damaging vital blood vessels, and it can also help them plan the operation.
X-ray angiography can be uncomfortable because the doctor has to put a small catheter into the artery leading to the pancreas. Usually the catheter is put into an artery in your inner thigh and threaded up to the pancreas. A local anesthetic is often used to numb the area before inserting the catheter. Once the catheter is in place, the dye is injected to outline all the vessels while the x-rays are being taken.
Angiography can also be done with a CT scanner (CT angiography) or an MRI scanner (MR angiography). These techniques are now used more often because they can give the same information without the need for a catheter in the artery. You might still need an IV line so that a contrast dye can be injected into the bloodstream during the imaging.
Several types of blood tests can be used to help diagnose pancreatic cancer or to help determine treatment options if it is found.
Liver function tests: Jaundice (yellowing of the skin and eyes) is often one of the first signs of pancreatic cancer. Doctors often get blood tests to assess liver function in people with jaundice to help determine its cause. Certain blood tests can look at levels of different kinds of bilirubin (a chemical made by the liver) and can help tell whether a patient’s jaundice is caused by disease in the liver itself or by a blockage of bile flow (from a gallstone, a tumor, or other disease).
Tumor markers: Tumor markers are substances that can sometimes be found in the blood when a person has cancer. Tumor markers that may be helpful in pancreatic cancer are:
Neither of these tumor marker tests is accurate enough to tell for sure if someone has pancreatic cancer. Levels of these tumor markers are not high in all people with pancreatic cancer, and some people who don’t have pancreatic cancer might have high levels of these markers for other reasons. Still, these tests can sometimes be helpful, along with other tests, in figuring out if someone has cancer.
In people already known to have pancreatic cancer and who have high CA19-9 or CEA levels, these levels can be measured over time to help tell how well treatment is working. If all of the cancer has been removed, these tests can also be done to look for signs the cancer may be coming back.
Other blood tests: Other tests, like a CBC or chemistry panel, can help evaluate a person’s general health (such as kidney and bone marrow function). These tests can help determine if they’ll be able to withstand the stress of a major operation.
A person’s medical history, physical exam, and imaging test results may strongly suggest pancreatic cancer, but usually the only way to be sure is to remove a small sample of tumor and look at it under the microscope. This procedure is called a biopsy. Biopsies can be done in different ways.
Percutaneous (through the skin) biopsy: For this test, a doctor inserts a thin, hollow needle through the skin over the abdomen and into the pancreas to remove a small piece of a tumor. This is known as a fine needle aspiration (FNA). The doctor guides the needle into place using images from ultrasound or CT scans.
Endoscopic biopsy: Doctors can also biopsy a tumor during an endoscopy. The doctor passes an endoscope (a thin, flexible, tube with a small video camera on the end) down the throat and into the small intestine near the pancreas. At this point, the doctor can either use endoscopic ultrasound (EUS) to pass a needle into the tumor or endoscopic retrograde cholangiopancreatography (ERCP) to place a brush to remove cells from the bile or pancreatic ducts.
Surgical biopsy: Surgical biopsies are now done less often than in the past. They can be useful if the surgeon is concerned the cancer has spread beyond the pancreas and wants to look at (and possibly biopsy) other organs in the abdomen. The most common way to do a surgical biopsy is to use laparoscopy (sometimes called keyhole surgery). The surgeon can look at the pancreas and other organs for tumors and take biopsy samples of abnormal areas.
Rarely, the doctor might not do a biopsy on someone who has a tumor in the pancreas if imaging tests show the tumor is very likely to be cancer and if it looks like surgery can remove all of it. Instead, the doctor will proceed with surgery, at which time the tumor cells can be looked at in the lab to confirm the diagnosis. During surgery, if the doctor finds that the cancer has spread too far to be removed completely, only a sample of the cancer may be removed to confirm the diagnosis, and the rest of the planned operation will be stopped.
If treatment (such as chemotherapy or radiation) is planned before surgery, a biopsy is needed first to be sure of the diagnosis.
The samples obtained during a biopsy (or during surgery) are sent to a lab, where they are looked at under a microscope to see if they contain cancer cells.
If cancer is found, other tests might be done as well. For example, tests might be done to see if the cancer cells have mutations (changes) in certain genes, such as the BRCA genes (BRCA1 or BRCA2) or NTRK genes. This might affect whether certain targeted therapy drugs might be helpful as part of treatment.
See Testing Biopsy and Cytology Specimens for Cancer to learn more about different types of biopsies, how the biopsy samples are tested in the lab, and what the results will tell you.
If you’ve been diagnosed with pancreatic cancer, your doctor might suggest speaking with a genetic counselor to determine if you could benefit from genetic testing.
Some people with pancreatic cancer have gene mutations (such as BRCA mutations) in all the cells of their body, which put them at increased risk for pancreatic cancer (and possibly other cancers). Testing for these gene mutations can sometimes affect which treatments might be helpful. It might also affect whether other family members should consider genetic counseling and testing as well.
For more information on genetic testing, see Genetics and Cancer.
The American Cancer Society medical and editorial content team
Our team is made up of doctors and oncology certified nurses with deep knowledge of cancer care as well as journalists, editors, and translators with extensive experience in medical writing.
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National Cancer Institute. Physician Data Query (PDQ). Pancreatic Cancer Treatment – for Health Professionals. 2018. Accessed at https://www.cancer.gov/types/pancreatic/hp/pancreatic-treatment-pdq on November 1, 2018.
National Comprehensive Cancer Network. NCCN Clinical Practice Guidelines in Oncology: Pancreatic Adenocarcinoma. V.1.2020. Accessed at https://www.nccn.org/professionals/physician_gls/pdf/pancreatic.pdf on January 2, 2020.
Winter JM, Brody JR, Abrams RA, Lewis NL, Yeo CJ. Chapter 49: Cancer of the Pancreas. In: DeVita VT, Lawrence TS, Rosenberg SA, eds. DeVita, Hellman, and Rosenberg’s Cancer: Principles and Practice of Oncology. 10th ed. Philadelphia, Pa: Lippincott Williams & Wilkins; 2015.
Last Revised: January 2, 2020
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