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How is Pancreatic Cancer Diagnosed?

There are three main ways to diagnose cancer: Imaging Tests, Blood Tests, and Biopsy.


The most important tests used to detect pancreatic cancer are imaging tests. These tests use a variety of methods to see inside the body. Imaging tests can be simple X-rays or more complex scanning methods that use computers to reconstruct the structures in the body. Some typical imaging tests are described in this section, and their uses are listed in the Table below.

Imaging Test
Computed Temography (CT) Scan Can help determine if the tumor is localized or has spread (metastasized).
Can detect adnormal masses.
Can detect blockages of the pancreatic and bile ducts.

Dual-Phase Helical CT Scan Can detect 98% of pancreatic cancers.
Can detect distant metadtases.

Multidetector Row CT (MDCT) Scan Has improved image resolution.
Can rapidly scan large volumes.

Ultrasonography Can determine if pancreatic tissue is normal or abnormal.
Can help detect blockages of the pancreatic and bile ducts. 
Limited sensitivity for pancreatic evalution.

Endoscopic Ultrasonography (EUS) Highly reliable
Can determine local extent of disease. 
Can detect lesions in the head, body, and tail of the pancreas.
Tissue samples can be taken at the same time. 

Laparoscopic Ultrasonography (LUS) Can determine if the tumore has spread to the peritoneum.
Can detect liver mestastases.

Magnetic Resonance Imaging (MRI) Can detect masses. 
Can detect blockages of the pancreatic and bile ducts.

Magnetic Resonance Cholangiopancreatography (MRCP) Can detect obstructions in the pancreatic and bile ducts.

Endoscopic Retrograde Cholangiopancreatictography (ERCP) Can detect obstructions in the pancreatic and bile ducts. 
Usually reserved for people who require stent placement for symptom management.

Position Emission Tomography (PET) Scan Detects increased sugar utilization by tumors in the body. 



Blood tests are frequently performed for diagnostic purposes. No single blood test can be used to make a diagnosis of pancreatic cancer. When a person has pancreatic cancer, however, elevated levels of bilirubin or liver enzymes may be present.

Different tumor markers in the blood are used to detect and monitor many types of cancer. Tumor markers are substances, usually complex proteins, produced by tumor cells. Proteins form the basis of body structures such as cells, tissues, and organs. Enzymes and some hormones are composed of protein. Some tumor markers can indicate specific types of cancer; others are found in several types of cancer.

Two commercially available tumor marker tests are of use in patients with pancreatic cancer, cancer antigen 19-9 (CA 19-9) and carcinoembryonic antigen (CEA). These markers are not accurate enough to be used to screen healthy people for or to make a diagnosis of pancreatic cancer. However, CA 19-9 and CEA are frequently used to track the progress of treatment in patients with pancreatic cancer. CA 19-9 is a protein found on the surface of certain types of cells and is shed by tumor cells, making it useful in following the course of cancer. The presence of the protein CEA may indicate cancer because elevations in CEA levels are not usually found in people who are healthy. CEA is not as useful as is CA 19-9 in pancreatic cancer testing.


Because the only definitive way to diagnose cancer is to directly visualize cancer cells under a microscope, a biopsy may be performed when pancreatic cancer is suspected. Although typically needed for patients who have undergone an initial round of chemotherapy or radiation therapy, not every pancreatic mass needs to be biopsied. A biopsy is the process of removing tissue samples, which are then examined under a microscope to check for cancer cells.

Downloadable Guide

Click to download the comprensive guide for Understanding Pancreatic Cancer (Adobe/PDF format)


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