We have two different staging systems used for classifying colon cancer. TNM system (using Roman numerals), or system of Dukes' (using the characters A through D) consists of four phases and the latest system includes five stages. This creates confusion in the field of medicine, because both phases are used to diagnose cases of colon cancer, and type of treatment depends on the stage. Early diagnosis of the disease can not be stressed enough doctors around the world. Earlier detection, the prognosis is better, regardless of which system is used.Cancer occurs when cells begin to change and grow abnormally. Growth of cells in the body begins to destroy other cells, tissues and organs have been robbed of oxygen and nutrients. Without oxygen and nutrients, these parts of the body can not survive.
Stage 0
Colon cancer can be classified as Stage 0, if the cancer is still the same place where it started. It has not spread to everyone. It affects only the innermost layer of the colon wall. This is the first stage of colon cancer and can be detected by regular checkups and prompt action when the predominant symptoms and signs. There is no Stage 0 of the TNM system.
Stage I
In phase I colon cancer, cancer affects only the superficial layers of the inner wall of the colon, but has spread to deeper layers of colon cancer at stage 0. The prognosis at this stage of colon cancer is the highest with 90% probability or more for a survival rate five years. To catch the cancer at this stage should be in harmony with your body, notice any changes immediately, and schedule regular checkups with your doctor for signs. Signs and symptoms may take up to 14 weeks to appear. These are the same as the Dukes than one category.
Phase II
At this stage of colon cancer, the cancer has spread beyond the superficial layer of the colon wall and has now reached the muscle layer. The prognosis of this stage is still very good and the cancer is usually treated with surgery to remove the infected area of colon. Early detection is also very important in this phase. This phase is the same as Class B. Dukes
Stage III
The third stage of the cancer has spread through the colon wall and now affects nearby lymph nodes and / or organs. The forecast is higher for patients with three or fewer lymph nodes infected. This is one of the last stages of this cancer. This step is the same as the Dukes' C class.
Stage IV
This stage of cancer is the most advanced. At this stage, the cancer usually spreads to other parts of the body. The most common areas are the liver and lungs. The prognosis for this stage is smaller, but each patient is different and so is every case of cancer. Studies have shown that patients with less than three liver masses have a better prognosis than others. This step is equivalent to the D of Dukes.
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Stage 0
Colon cancer can be classified as Stage 0, if the cancer is still the same place where it started. It has not spread to everyone. It affects only the innermost layer of the colon wall. This is the first stage of colon cancer and can be detected by regular checkups and prompt action when the predominant symptoms and signs. There is no Stage 0 of the TNM system.
Stage I
In phase I colon cancer, cancer affects only the superficial layers of the inner wall of the colon, but has spread to deeper layers of colon cancer at stage 0. The prognosis at this stage of colon cancer is the highest with 90% probability or more for a survival rate five years. To catch the cancer at this stage should be in harmony with your body, notice any changes immediately, and schedule regular checkups with your doctor for signs. Signs and symptoms may take up to 14 weeks to appear. These are the same as the Dukes than one category.
Phase II
At this stage of colon cancer, the cancer has spread beyond the superficial layer of the colon wall and has now reached the muscle layer. The prognosis of this stage is still very good and the cancer is usually treated with surgery to remove the infected area of colon. Early detection is also very important in this phase. This phase is the same as Class B. Dukes
Stage III
The third stage of the cancer has spread through the colon wall and now affects nearby lymph nodes and / or organs. The forecast is higher for patients with three or fewer lymph nodes infected. This is one of the last stages of this cancer. This step is the same as the Dukes' C class.
Stage IV
This stage of cancer is the most advanced. At this stage, the cancer usually spreads to other parts of the body. The most common areas are the liver and lungs. The prognosis for this stage is smaller, but each patient is different and so is every case of cancer. Studies have shown that patients with less than three liver masses have a better prognosis than others. This step is equivalent to the D of Dukes.
Source by ezinearticles.com
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