What is pancreatic cancer?
Pancreatic cancer is the fourth most common cause of cancer death in the U.S. According to the American Cancer Society, about 45,000 new cases of pancreatic cancer and about 38,000 deaths are expected in 2013. Pancreatic cancer occurs when a cell in the pancreas is damaged and this malignant (cancer) cell starts to grow out of control.
Risk factors for pancreatic cancer include:
Age. Most pancreatic cancer occurs in people over the age of 55.
Smoking. Heavy cigarette smokers are two or three times more likely than nonsmokers to develop pancreatic cancer.
Obesity and physical inactivity. Pancreatic cancer is more common in people who are very overweight and in people who don't get much physical activity.
Diabetes. Pancreatic cancer occurs more often in people who have type 2 diabetes than in those who do not.
Gender. More men than women are diagnosed with pancreatic cancer.
Race. African-Americans are more likely than Asians, Hispanics, or whites to be diagnosed with pancreatic cancer.
Family history. The risk for developing pancreatic cancer is higher if a person's mother, father, or a sibling had the disease.
Cirrhosis of the liver. People with cirrhosis have a higher risk of pancreatic cancer.
Workplace exposures. Exposure to certain occupational pesticides, dyes, and chemicals used in the metal industry may increase the risk of pancreatic cancer.
Some genetic syndromes. Certain inherited gene mutations, such as in the BRCA2 gene, increase the risk of pancreatic cancer.
Chronic pancreatitis. Long-term inflammation of the pancreas has been linked with increased risk for pancreatic cancer.
There are several types of pancreatic cancers, including the following:
Adenocarcinoma of the pancreas. The most common pancreatic cancer, which occurs in the lining of the pancreatic duct.
Adenosquamous carcinoma. A rare pancreatic cancer.
Squamous cell carcinoma. A rare pancreatic cancer.
Some neuroendocrine tumors in the pancreas include the following--they may be benign (noncancerous) or malignant (cancerous):
Insulinoma. A rare pancreatic tumor that secretes insulin, the hormone that lowers glucose levels in the blood.
Gastrinoma. A tumor that secretes above average levels of gastrin, a hormone that stimulates the stomach to secrete acids and enzymes. Gastrinoma can cause peptic ulcers.
Glucagonoma. A tumor that secretes glucagon, a hormone that raises levels of glucose in the blood, often leading to a rash.
What are the symptoms of pancreatic cancer?
The following are the other most common symptoms of pancreatic cancer. However, each individual may experience symptoms differently. Symptoms may include:
Pain in the upper abdomen (belly) or upper back
Loss of appetite
Jaundice (yellow skin and eyes, and dark urine)
Extreme tiredness (fatigue)
An enlarged abdomen from a swollen gallbladder
Pale, greasy stools that float in the toilet
The symptoms of pancreatic cancer may be a lot like those of other conditions or medical problems. Always consult your doctor for a diagnosis.
How is pancreatic cancer diagnosed?
In addition to a complete medical history and physical examination, diagnostic procedures for pancreatic cancer may include the following:
Ultrasound (also called sonography). A diagnostic imaging technique that uses high-frequency sound waves to create an image of the internal organs. Ultrasounds are used to view internal organs of the abdomen such as the liver, pancreas, spleen, and kidneys and to assess blood flow through various vessels. The ultrasound may be done using an external or internal device:
Transabdominal ultrasound. The technician places an ultrasound device on the abdomen to create the image of the pancreas.
Endoscopic ultrasound (EUS). The doctor inserts an endoscope, a small, flexible tube with an ultrasound device at the tip, through the mouth and stomach, and into the small intestine. As the doctor slowly withdraws the endoscope, images of the pancreas and other organs are made.
Computed tomography scan (CT or CAT scan). A diagnostic imaging procedure that uses a combination of X-rays and computer technology to produce horizontal, or axial, images (often called slices) of the body. A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. CT scans are more detailed than general X-rays.
Magnetic resonance imaging (MRI). A diagnostic procedure that uses a combination of large magnets, radiofrequencies, and a computer to produce detailed images of organs and structures within the body.
Endoscopic retrograde cholangiopancreatography (ERCP). A procedure that allows the doctor to diagnose and treat problems in the liver, gallbladder, bile ducts, and pancreas. The procedure combines X-ray and the use of an endoscope, a long, flexible, lighted tube. The scope is guided through the patient's mouth and throat, then through the esophagus, stomach, and duodenum (first part of the small intestine). The doctor can examine the inside of these organs and detect any abnormalities. A tube is then passed through the scope, and a dye is injected that will allow the bile and pancreatic ducts to be seen on an X-ray.
Percutaneous transhepatic cholangiography (PTC). A needle is put through the skin and into the liver where the dye (contrast) is injected so that the bile duct structures can be seen by X-ray. This test is generally only done if an ERCP cannot be done.
Pancreas biopsy. A procedure in which a sample of pancreatic tissue is removed (with a needle or during surgery) for examination under a microscope.
Special blood tests
Positron emission tomography (PET). A type of nuclear medicine procedure. For this test, a radioactive substance, usually bound to a type of sugar, is injected through a vein before the body is scanned. The radioactive sugar collects in cancer cells, which will show up on images. This test is not as specific as CT scanning, and is not used alone to diagnose pancreatic cancer. A PET scan is often done in combination with a CT scan.
Treatment for pancreatic cancer
Specific treatment for pancreatic cancer will be determined by your doctor based on:
Your age, overall health, and medical history
Location and extent of the disease
Type of cancer
Your tolerance of specific medicines, procedures, or therapies
Expectations for the course of the disease
Your opinion or preference
Depending on the type and stage, pancreatic cancer may be treated with the following:
Surgery. This treatment may be necessary to remove the tumor, a section, or the entire pancreas and often parts of other organs. The type of surgery depends on the stage of the cancer, the location and size of the tumor, and the person's health. Types of surgery for pancreatic cancer include the following:
Whipple procedure. This procedure involves removal of the head of the pancreas, part of the small intestine, the gall bladder and part of the common bile duct, part of the stomach, and lymph nodes near the head of the pancreas. Most pancreatic tumors occur in the head of the pancreas, so the Whipple procedure is the most commonly performed surgical procedure for pancreatic cancer.
Distal pancreatectomy. If the tumor is located in the body and tail of the pancreas, both of these sections of the pancreas will be removed, along with the spleen.
Total pancreatectomy. The entire pancreas, part of the small intestine and stomach, the common bile duct, the spleen, the gallbladder, and some lymph nodes will be removed. This type of operation is not done often.
Palliative surgery. For more advanced cancers, surgery may be done not to try to cure the cancer, but to relieve problems such as a blocked bile duct.
External radiation (external beam therapy). A treatment that precisely sends high levels of radiation directly to the cancer cells. The machine is controlled by the radiation therapist. Since radiation is used to kill cancer cells and to shrink tumors, special shields may be used to protect the tissue surrounding the treatment area. Radiation treatments are painless and usually last a few minutes. Radiation therapy may be given alone, or in combination with surgery and/or chemotherapy.
Chemotherapy. The use of anticancer drugs to kill cancer cells. In most cases, chemotherapy works by interfering with the cancer cell’s ability to grow or reproduce. Different groups of drugs work in different ways to fight cancer cells. The oncologist will recommend a treatment plan for each individual. Chemotherapy may be given alone, or in combination with surgery and radiation therapy.
Medication (to relieve or reduce pain)
Long-term prognosis for individuals with pancreatic cancer depends on the size and type of the tumor, lymph node involvement, and degree of metastases (spreading) at the time of diagnosis.