pancreas diseases : Are the Tumors Associated With MEN1 Cancerous?

The overactive endocrine glands associated with MEN1 may contain benign tumors, but usually they do not have any signs of cancer. Benign tumors can disrupt normal function by releasing hormones or by crowding nearby tissue. For example, a prolactinoma may become quite large in someone with MEN1. As it grows, the tumor can press against and damage the normal part of the pituitary gland or the nerves that carry vision from the eyes. Sometimes impaired vision is the first sign of a pituitary tumor in MEN1.
Another type of benign tumor often seen in people with MEN1 is a plum-sized, fatty tumor called a lipoma, which grows under the skin. Lipomas cause no health problems and can be removed by simple cosmetic surgery if desired. These tumors are also fairly common in the general population.

Benign tumors do not spread to or invade other parts of the body. Cancer cells, by contrast, break away from the primary tumor and spread, or metastasize, to other parts of the body through the bloodstream or lymphatic system.

The pancreatic islet cell tumors associated with MEN1 tend to be numerous and small, but most are benign and do not release active hormones into the blood. Eventually, about half of MEN1 cases will develop a cancerous pancreatic tumor.

Copyright © 2000-2006 Adviware Pty Ltd. All rights reserved.