Pancreatic Cancer (Adenocarcinoma)
What is Pancreatic Cancer (Adenocarcinoma)?
Pancreatic cancer is a disease where abnormal cells grow uncontrollably in the pancreas. The pancreas is an organ behind your stomach that makes enzymes for digestion and hormones like insulin. Adenocarcinoma is the most common type of pancreatic cancer, starting in the cells that line the pancreatic ducts.
This cancer often grows silently for months or years before causing noticeable symptoms. By the time most people feel sick, the cancer has often spread beyond the pancreas. This makes early detection difficult but critically important.
Pancreatic adenocarcinoma accounts for about 90% of all pancreatic cancers. It tends to be aggressive and challenging to treat. Understanding your risk factors and monitoring certain blood markers can help catch changes early when treatment options are most effective.
Symptoms
- Yellowing of the skin and eyes, also called jaundice
- Pain in the upper abdomen that may spread to the back
- Unexplained weight loss without trying
- Loss of appetite or feeling full quickly
- New onset diabetes or worsening blood sugar control
- Dark urine and pale or clay-colored stools
- Nausea and vomiting
- Fatigue and weakness
- Blood clots in the legs or lungs
- Digestive problems and changes in stool
Many people have no symptoms in the early stages. Warning signs often appear only after the tumor grows large enough to press on nearby organs or block ducts. This is why regular screening is so important for people at higher risk.
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Causes and risk factors
The exact cause of pancreatic adenocarcinoma is not fully understood. Most cases develop when DNA damage in pancreatic cells causes them to grow out of control. Risk factors include smoking, which doubles your risk, chronic pancreatitis, family history of pancreatic cancer, obesity, type 2 diabetes, and age over 65. Certain inherited genetic mutations also increase risk significantly.
Lifestyle factors play an important role in pancreatic cancer risk. A diet high in red meat and processed foods may increase risk, while eating fruits and vegetables appears protective. Heavy alcohol use can cause chronic pancreatitis, which raises cancer risk. Workplace exposure to certain chemicals in the metalworking and dry-cleaning industries has also been linked to higher rates.
How it's diagnosed
Diagnosing pancreatic cancer typically involves a combination of imaging tests, blood tests, and tissue samples. Your doctor may order a CT scan or MRI to look for tumors in the pancreas. Blood tests can reveal elevated levels of certain enzymes and tumor markers. Lipase is a pancreatic enzyme that may be elevated when a tumor blocks pancreatic ducts or causes inflammation. Rite Aid offers lipase testing as an add-on to help detect pancreatic abnormalities early.
Additional diagnostic tools include endoscopic ultrasound, where a small camera examines the pancreas from inside the digestive tract. A biopsy may be needed to confirm cancer and determine the specific type. The tumor marker CA 19-9 is often measured alongside lipase and imaging studies to help with diagnosis and monitoring treatment response.
Treatment options
- Surgery to remove the tumor if caught early and cancer has not spread
- Chemotherapy to kill cancer cells or slow their growth
- Radiation therapy to target cancer cells with high-energy beams
- Targeted therapy drugs that attack specific cancer cell proteins
- Immunotherapy to help your immune system fight cancer
- Pain management through medications and nerve blocks
- Enzyme supplements to help with digestion if the pancreas is damaged
- Nutritional support to maintain weight and strength
- Insulin or other diabetes medications if the pancreas cannot produce enough
- Palliative care to improve quality of life and manage symptoms
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- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Survival rates vary greatly depending on when the cancer is found. When detected early and confined to the pancreas, the 5-year survival rate is about 42%. Unfortunately, only about 10% of cases are found at this early stage. The overall 5-year survival rate for all stages combined is around 11%, making early detection critical.
Blood tests alone cannot definitively diagnose pancreatic cancer, but they can reveal warning signs. Elevated lipase levels may indicate a pancreatic tumor blocking ducts or causing inflammation. The tumor marker CA 19-9 is often elevated in pancreatic cancer. These tests work best when combined with imaging studies and used for people at higher risk.
People over age 65, smokers, and those with a family history of pancreatic cancer face the highest risk. Other risk factors include chronic pancreatitis, long-standing diabetes, obesity, and certain inherited genetic syndromes. People with two or more close relatives who had pancreatic cancer should discuss screening options with their doctor.
Elevated lipase can occur when a pancreatic tumor blocks the pancreatic duct or infiltrates pancreatic tissue. It may also indicate secondary pancreatitis caused by the tumor. While lipase elevation is not specific to cancer and can occur with other pancreatic conditions, persistent elevation warrants further investigation with imaging and additional tests.
About 10% of pancreatic cancers are linked to inherited genetic mutations. Syndromes like Lynch syndrome, BRCA2 mutations, and familial pancreatitis increase risk significantly. If you have two or more first-degree relatives with pancreatic cancer, your risk is much higher. Genetic counseling and testing may be recommended for high-risk families.
Yes, several lifestyle changes can lower your risk. Quitting smoking is the single most important step, as smoking doubles pancreatic cancer risk. Maintaining a healthy weight, eating plenty of fruits and vegetables, limiting red and processed meats, and reducing alcohol intake all help. Regular physical activity also appears protective.
The pancreas sits deep in the abdomen behind other organs, making tumors hard to feel during physical exams. Early-stage pancreatic cancer rarely causes symptoms. By the time symptoms like jaundice or pain appear, the cancer has often spread. There is currently no routine screening test for average-risk people, which is why monitoring biomarkers matters for high-risk individuals.
Long-standing diabetes slightly increases pancreatic cancer risk. More concerning is new-onset diabetes in people over 50, which can be an early sign of pancreatic cancer. The tumor can damage insulin-producing cells, causing blood sugar to rise. If you develop diabetes suddenly without clear risk factors, ask your doctor about pancreatic evaluation.
People with strong family history or genetic mutations should discuss screening with a specialist. Many experts recommend starting annual screening at age 50 or 10 years younger than the earliest family diagnosis. Screening typically includes MRI or endoscopic ultrasound and blood tests like lipase and CA 19-9. Your doctor will create a personalized monitoring plan based on your risk level.
When pancreatic cancer is found early and has not spread, surgery offers the best chance for cure. The Whipple procedure removes the tumor along with parts of the pancreas and surrounding organs. Combining surgery with chemotherapy or radiation improves outcomes. While pancreatic cancer remains challenging to treat, early detection significantly improves survival rates and treatment options.