Stage 0 pancreatic cancer, also known as carcinoma in situ, is the earliest stage of the disease. In this stage, abnormal cells, which may or may not be cancerous, begin to form a tumor in the lining of the pancreas. In stage 1 pancreatic cancer, a cancerous tumor has formed in the pancreas but has not spread beyond the pancreas. In stage 2 pancreatic cancer, the tumor has spread beyond the pancreas. In stage 3 pancreatic cancer, the cancer that began in the pancreas has spread beyond the pancreas to major blood vessels in the area and may have spread to other parts of the body near the pancreas, including the lymph nodes. In stage 4 pancreatic cancer, the cancer that began in the pancreas has spread beyond the pancreas to other parts of the body far from the pancreas, possibly including the lymph nodes.
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Honor Society of Nursing (STTI) answered
Johns Hopkins Medicine answeredStaging is a method of describing pancreas cancer based on how far it has spread (metastasized). Pancreatic tumors may be staged based on the TNM (tumor, node, metastasis) system, or a numbered system. It is used to describe the size of a primary tumor (T), whether there are lymph nodes with cancer cells in them (N), and whether the cancer has spread (metastasized) to a different part of the body (M).
• T values range from 1 to 4, with 1 being a small tumor and 4, a large one
• N values range from 0 to 3, with 0 meaning no positive lymph nodes and 3 indicating many positive nodes (positive node means presence of cancer)
• The M value is either 0 or 1, with 0 meaning the cancer has not spread (metastasized) and 1 meaning that it has spread
The following numerical stages also may be used for pancreatic cancer:
• Stage 0 (Carcinoma in Situ) - Abnormal cells are found in the lining of the pancreas. The cells may become cancerous and spread into nearby normal tissue.
• Stage I - Cancer is found in the pancreas only. Stage I is also divided into two subsets based on the size of the tumor. In Stage IA, the tumor is two centimeters or smaller. In Stage IB, the tumor is larger than two centimeters.
• Stage II - The cancer may have spread to nearby tissue and organs or lymph nodes near the pancreas. Stage II is divided into Stage IIA and Stage IIB, based on where the cancer has spread. In Stage IIA, cancer has spread to nearby tissue and organs but not to the lymph nodes. In Stage IIB, the cancer has spread to nearby lymph nodes and may have also spread to nearby tissue and organs.
• Stage III - The cancer has spread to the major blood vessels near the pancreas and may have spread to nearby lymph nodes.
• Stage IV - The cancer may be of any size and have spread to distant organs, such as the liver, lung, and peritoneal cavity. It may also have spread to organs and tissues near the pancreas or to the lymph nodes.
Depending on the stage and other contributing medical factors, a treatment protocol will be developed to achieve the most successful outcome.