Pancreatic cancer
Pancreatic cancer is a malignant neoplasm originating from transformed cells arising in tissues forming thepancreas. The most common type of pancreatic cancer, accounting for 95% of these tumors, is adenocarcinoma(tumors exhibiting glandular architecture on light microscopy) arising within the exocrine component of the pancreas. A minority arise from islet cells, and are classified as neuroendocrine tumors. The signs and symptoms that eventually lead to the diagnosis depend on the location, the size, and the tissue type of the tumor, and may include abdominal pain, lower back pain, and jaundice (if the tumor compresses the bile duct), unexplained weight loss, and digestive problems.
Pancreatic cancer is the fourth most common cause of cancer-related deaths in the United States[1] and the twelfth worldwide.[2] Pancreatic cancer has an extremely poor prognosis: for all stages combined, the 1- and 5-year relative survival rates are 25% and 6%, respectively;[3] for local disease the 5-year survival is approximately 15% [3][4] while the median survival for locally advanced and for metastatic disease, which collectively represent over 80% of individuals,[4] is about 10 and 6 months respectively.[5] Individuals vary, however - some are only diagnosed when they are already terminally ill and therefore only have a few days or weeks. Others have slower progression and may live a couple of years even if surgery is not possible. Men are 30% more likely to get pancreatic cancer than are women.
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