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Islet Cell Tumors (Endocrine Pancreas) Treatment (PDQ®)     
Last Modified: 05/06/2008
Patient Version
Stage Explanation

Stages of islet cell cancer
Gastrinoma
Insulinoma
Glucagonoma
Miscellaneous
Recurrent



Stages of islet cell cancer

Once islet cell cancer is found, more tests will be done to find out if cancer cells have spread to other parts of the body. This is called staging. The staging system for islet cell cancer is still being developed. These tumors are most often divided into one of three groups:

  1. islet cell cancers occurring in one site within the pancreas,
  2. islet cell cancers occurring in several sites within the pancreas, or
  3. islet cell cancers that have spread to lymph nodes near the pancreas or to distant sites.

Treatment of islet cell cancer depends on the type of tumor, the stage, and the patient’s general health. The following types of islet cell tumors are found:

Gastrinoma

The tumor makes large amounts of a hormone called gastrin, which causes too much acid to be made in the stomach. Ulcers may develop as a result of too much stomach acid.

Insulinoma

The tumor makes too much of the hormone insulin and causes the body to store sugar instead of burning the sugar for energy. This causes too little sugar in the blood, a condition called hypoglycemia.

Glucagonoma

This tumor makes too much of the hormone glucagon and causes too much sugar in the blood, a condition called hyperglycemia.

Miscellaneous

Other types of islet cell cancer can affect the pancreas and/or small intestine. Each type of tumor may affect different hormones in the body and cause different symptoms.

Recurrent

Recurrent disease means that the cancer has come back (recurred) after it has been treated. It may come back in the pancreas or in another part of the body.



Glossary Terms

blood
A tissue with red blood cells, white blood cells, platelets, and other substances suspended in fluid called plasma. Blood takes oxygen and nutrients to the tissues, and carries away wastes.
cancer (KAN-ser)
A term for diseases in which abnormal cells divide without control. Cancer cells can invade nearby tissues and can spread to other parts of the body through the blood and lymph systems. There are several main types of cancer. Carcinoma is cancer that begins in the skin or in tissues that line or cover internal organs. Sarcoma is cancer that begins in bone, cartilage, fat, muscle, blood vessels, or other connective or supportive tissue. Leukemia is cancer that starts in blood-forming tissue such as the bone marrow, and causes large numbers of abnormal blood cells to be produced and enter the blood. Lymphoma and multiple myeloma are cancers that begin in the cells of the immune system. Central nervous system cancers are cancers that begin in the tissues of the brain and spinal cord.
cell (sel)
The individual unit that makes up the tissues of the body. All living things are made up of one or more cells.
glucagon
A hormone produced by the pancreas that increases the level of glucose (sugar) in the blood.
hormone (HOR-mone)
One of many chemicals made by glands in the body. Hormones circulate in the bloodstream and control the actions of certain cells or organs. Some hormones can also be made in the laboratory.
hyperglycemia (HY-per-gly-SEE-mee-uh)
Higher than normal amount of glucose (a type of sugar) in the blood. Hyperglycemia can be a sign of diabetes or other conditions. Also called high blood sugar.
hypoglycemia
Abnormally low blood sugar.
insulin (IN-su-lin)
A hormone made by the islet cells of the pancreas. Insulin controls the amount of sugar in the blood by moving it into the cells, where it can be used by the body for energy.
islet cell carcinoma (I-let sel KAR-sih-NOH-muh)
A rare cancer that forms in the islets of Langerhans cells (a type of cell found in the pancreas). Also called pancreatic endocrine cancer.
lymph node (limf node)
A rounded mass of lymphatic tissue that is surrounded by a capsule of connective tissue. Lymph nodes filter lymph (lymphatic fluid), and they store lymphocytes (white blood cells). They are located along lymphatic vessels. Also called lymph gland.
pancreas
A glandular organ located in the abdomen. It makes pancreatic juices, which contain enzymes that aid in digestion, and it produces several hormones, including insulin. The pancreas is surrounded by the stomach, intestines, and other organs.
recur
To come back or to return.
recurrent cancer (ree-KER-ent KAN-ser)
Cancer that has recurred (come back), usually after a period of time during which the cancer could not be detected. The cancer may come back to the same place as the original (primary) tumor or to another place in the body. Also called recurrence.
small intestine (... in-TES-tin)
The part of the digestive tract that is located between the stomach and the large intestine.
stage
The extent of a cancer in the body. Staging is usually based on the size of the tumor, whether lymph nodes contain cancer, and whether the cancer has spread from the original site to other parts of the body.
staging (STAY-jing)
Performing exams and tests to learn the extent of the cancer within the body, especially whether the disease has spread from the original site to other parts of the body. It is important to know the stage of the disease in order to plan the best treatment.
stomach (STUH-muk)
An organ that is part of the digestive system. The stomach helps digest food by mixing it with digestive juices and churning it into a thin liquid.
symptom
An indication that a person has a condition or disease. Some examples of symptoms are headache, fever, fatigue, nausea, vomiting, and pain.
tumor (TOO-mer)
An abnormal mass of tissue that results when cells divide more than they should or do not die when they should. Tumors may be benign (not cancerous), or malignant (cancerous). Also called neoplasm.
ulceration
The formation of a break on the skin or on the surface of an organ. An ulcer forms when the surface cells die and are cast off. Ulcers may be associated with cancer and other diseases.