pancreatic cancer

Pancreatic cancer often has a poor prognosis, even when diagnosed early. Pancreatic cancer typically spreads rapidly and is seldom detected in its early stages, which is a major reason why it’s a leading cause of cancer death. Signs and symptoms may not appear until pancreatic cancer is quite advanced and complete surgical removal isn’t possible.

Symptoms

Signs and symptoms of pancreatic cancer often don’t occur until the disease is advanced. When signs and symptoms do appear, they may include:

  • Upper abdominal pain that may radiate to your back
  • Yellowing of your skin and the whites of your eyes (jaundice)
  • Loss of appetite
  • Weight loss
  • Depression
  • Blood clots

When to see a doctor

See your doctor if you experience unexplained weight loss with or without a new diagnosis of diabetes or if you have persistent fatigue, abdominal pain, jaundice, or other signs and symptoms that bother you. Many diseases and conditions other than cancer may cause similar signs and symptoms, so your doctor may check for these conditions as well as for pancreatic cancer.

Causes

It’s not clear what causes pancreatic cancer in most cases. Doctors have identified risk factors, such as smoking, that increase your risk of developing pancreatic cancer.

Understanding your pancreas

Your pancreas is about 6 inches (about 15 centimeters) long and looks something like a pear lying on its side. The pancreas secretes hormones, including insulin, to help your body process sugar in the foods you eat. And it produces digestive juices to help your body digest food.

How pancreatic cancer forms

Pancreatic cancer occurs when cells in your pancreas develop mutations in their DNA. These mutations cause cells to grow uncontrollably and to continue living after normal cells would die. These accumulating cells can form a tumor.

Most pancreatic cancer begins in the cells that line the ducts of the pancreas. This type of cancer is called pancreatic adenocarcinoma or pancreatic exocrine cancer. It accounts for the vast majority of pancreatic cancers.

Rarely, cancer can form in the hormone-producing cells or the neuroendocrine cells of the pancreas. These types of cancer are called islet cell cancer, pancreatic endocrine cancer or pancreatic neuroendocrine tumors.

Risk factors

Factors that may increase your risk of pancreatic cancer include:

  • Excess body weight
  • Chronic inflammation of the pancreas (pancreatitis)
  • Diabetes
  • Family history of genetic syndromes that can increase cancer risk, including a BRCA2 gene mutation, Lynch syndrome and familial atypical mole-malignant melanoma (FAMMM) syndrome
  • Personal or family history of pancreatic cancer
  • Smoking

Complications

As pancreatic cancer progresses, it can cause complications such as:

  • Weight loss.A number of factors may cause weight loss in people with pancreatic cancer.

The cancer itself may cause weight loss. Nausea and vomiting caused by cancer treatments or a tumor pressing on your stomach may make it difficult to eat. Or your body may have difficulty properly processing nutrients from food because your pancreas isn’t making enough digestive juices.

Pancreatic enzyme supplements may be recommended to aid in digestion. Try to maintain your weight by adding extra calories where you can and making mealtime as pleasant and relaxed as possible.

  • Pancreatic cancer that blocks the liver’s bile duct can cause jaundice. Signs include yellow skin and eyes, dark-colored urine, and pale-colored stools. Jaundice usually occurs without abdominal pain.

Your doctor may recommend that a plastic or metal tube (stent) be placed inside the bile duct to hold it open. In some cases a bypass may be needed to create a new way for bile to flow from the liver to the intestines.

  • A growing tumor may press on nerves in your abdomen, causing pain that can become severe. Pain medications can help you feel more comfortable. Radiation therapy may help stop tumor growth temporarily to give you some relief.

In severe cases, your doctor may recommend a procedure to inject alcohol into the nerves that control pain in your abdomen (celiac plexus block). This procedure stops the nerves from sending pain signals to your brain.

  • Bowel obstruction.Pancreatic cancer that grows into or presses on the small intestine (duodenum) can block the flow of digested food from your stomach into your intestines.

Your doctor may recommend a tube (stent) be placed in your small intestine to hold it open. Or bypass surgery may be necessary to attach your stomach to a lower point in your intestines that isn’t blocked by cancer.

 

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