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Updated: 12/12/06 08:21 AM |
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Normally, cells grow and divide to produce more cells only when the body needs them. This orderly process keeps the body healthy. Sometimes cells keep dividing when new cells are not needed, forming a mass of extra tissue called a growth or a tumor. Tumors can be malignant or benign. Malignant tumors, or cancer, occur when cells divide without order and invade and destroy the tissue around them. Benign tumors occur when cells divide abnormally, but there is no spread into other tissues.
Benign Tumors:
Benign tumors are not cancer and usually do not threaten life. They often can be removed, and they usually do not come back. Cells in benign tumors do not spread to other parts of the body (e.g. they do not metastasize). There are many types of benign tumors of the pancreas and in general they are relatively uncommon tumors.
Malignant Tumors:
Malignant tumors are cancer. Cancer cells divide without control, invading and destroying the tissue around them. Also, cancer cells can break away from a malignant tumor and enter the blood or lymph system. This process, called metastasis, is the way that cancer spreads to other parts of the body. There are different types of cancer that can occur in the pancreas, but the most common type of cancer begins in the ducts that carry pancreatic digestive juices to the small bowel. Because the cancer starts in the pancreatic ducts, we refer to it as ductal adenocarcinoma. This is the type of cancer most people think about when talking about pancreatic cancer.