Understanding Your Pancreatic Cancer Diagnosis
A possible diagnosis of pancreatic cancer can be frightening, particularly because the disease is often discovered after symptoms have developed.
Understanding the tests and what they reveal can help patients and families participate more confidently in treatment decisions.
How Is Pancreatic Cancer Diagnosed?
Doctors generally use a combination of imaging studies, blood tests, and sometimes a biopsy.
CT Scan
A specialized CT scan is often the first major test when pancreatic cancer is suspected.
It can show:
The location and approximate size of a tumor.
Whether nearby blood vessels are involved.
Whether the cancer appears to have spread to other organs.
A pancreas-protocol CT scan provides particularly detailed images and helps doctors determine whether surgery might be possible.
MRI and MRCP
MRI provides another way to examine the pancreas and surrounding tissues.
MRCP is a specialized MRI technique that produces detailed images of the pancreatic and bile ducts.
These tests may be useful when CT findings are unclear or when additional information is needed.
Endoscopic Ultrasound (EUS)
During an endoscopic ultrasound, a flexible instrument is passed through the mouth into the stomach and small intestine.
An ultrasound device at its tip produces detailed images of the pancreas.
Doctors can also use EUS to obtain a small tissue sample with a needle.
Biopsy
A biopsy removes a small sample of tissue for examination under a microscope.
It can confirm whether cancer is present and identify the type.
A biopsy is generally required before chemotherapy or other nonsurgical cancer treatment. However, it may not always be necessary before surgery when imaging strongly suggests a removable pancreatic cancer.
What Do Blood Tests Tell Us?
Blood tests cannot reliably diagnose pancreatic cancer by themselves, but they provide useful information.
CA 19-9
CA 19-9 is a tumor marker that may be elevated in people with pancreatic cancer.
However, it has important limitations:
Some people with pancreatic cancer have normal CA 19-9 levels.
Other conditions, including bile duct obstruction, can raise the level.
Some people do not produce measurable CA 19-9.
For these reasons, CA 19-9 is not recommended as a routine screening test.
It may be useful for monitoring treatment response or watching for recurrence when it was elevated before treatment.
Liver Function Tests
Blood tests may reveal abnormalities caused by blockage of the bile duct.
Elevated bilirubin can help explain jaundice, while other liver tests provide information about liver function.
Blood Glucose and HbA1c
Pancreatic cancer can sometimes interfere with insulin production.
Unexpected changes in blood glucose or newly diagnosed diabetes may provide additional clues, although these findings are not specific to cancer.
Understanding the Stage of Pancreatic Cancer
Staging describes how far the cancer has progressed.
Doctors often use the TNM system, which considers tumor size and extent, lymph node involvement, and whether the cancer has spread to distant organs.
For treatment planning, pancreatic cancer is also commonly described in four practical categories.
Resectable
The tumor appears removable by surgery.
Borderline Resectable
Surgery may be possible, but the tumor is close to or involves important blood vessels. Chemotherapy is often recommended before considering surgery.
Locally Advanced
The cancer involves nearby structures or blood vessels to an extent that generally prevents immediate surgical removal, but it has not spread to distant organs.
Metastatic
The cancer has spread to distant locations, commonly the liver, lungs, or abdominal lining.
These categories help determine which treatments are most appropriate.
Genetic Testing and Personalized Treatment
One of the important developments in pancreatic cancer care is the growing use of genetic and molecular testing.
Inherited Genetic Testing
Major guidelines recommend that people diagnosed with pancreatic cancer be offered testing for inherited cancer-related genetic changes.
Examples include BRCA1, BRCA2, PALB2, and genes associated with Lynch syndrome.
Results may influence treatment decisions and help relatives understand their own cancer risk.
Tumor Molecular Testing
Testing the cancer itself may identify genetic alterations or other characteristics that could guide treatment.
For example, certain tumors may respond to targeted drugs or immunotherapy.
These opportunities are available only to selected patients, but testing can help identify them.
An important question for patients to ask is whether both inherited genetic testing and tumor molecular testing are appropriate.
Should You Get a Second Opinion?
Pancreatic cancer treatment can involve difficult decisions about surgery, chemotherapy, radiation, and clinical trials.
Because the disease is relatively uncommon and treatment can be complex, consultation with a medical center experienced in pancreatic cancer is often valuable.
This is particularly important when surgery is being considered.
A second opinion may confirm the original recommendation or identify additional options.
What Matters for Older Adults?
Age alone should not determine whether someone receives treatment.
A healthy person in their 80s may tolerate some treatments better than a younger person with serious medical problems.
Doctors should consider:
Overall physical health and other medical conditions.
Strength, mobility, and ability to perform everyday activities.
Nutritional status and recent weight loss.
Expected benefits and possible side effects of treatment.
Personal goals and preferences.
For some patients, maintaining independence and quality of life may be as important as extending survival.
Questions Worth Asking Your Doctor
What type of pancreatic cancer do I have?
What is its stage?
Is surgery a possibility?
Should I have inherited genetic testing and tumor molecular testing?
Would a second opinion at a specialized pancreatic cancer center be helpful?
Are there clinical trials appropriate for my situation?
The Important Point
A pancreatic cancer diagnosis involves more than identifying a tumor.
Imaging, biopsy results, staging, and genetic testing all contribute to understanding the disease and choosing treatment.
Patients and families benefit from asking questions, understanding their options, and seeking experienced medical guidance.
Learn More
Information about pancreatic cancer, including diagnosis and staging.
Describes imaging tests, biopsies, blood tests, and other diagnostic procedures.
Patient-oriented information about diagnostic tests, staging, and genetic testing. PanCAN also provides free, personalized assistance to patients and families, including help finding experienced specialists, obtaining second opinions, understanding treatment options, and identifying clinical trials.