BREAST CANCER STADIUM
The cancer has a different prognosis and treatment depending on the stage of development that are in and the risk factors a woman. To see this we must perform a series of analysis to facilitate their classification in one stadium or another.
The American Joint Committee on Cancer uses the TNM classification system:
The letter T followed by a number ranging from 0 to 4, indicates the size of the tumor and spread to the skin or chest wall beneath the breast. A higher number corresponds to a larger tumor and / or a higher spread to nearby tissues.
The letter N followed by a number ranging from 0 to 3 indicates whether the cancer has spread to lymph nodes near the breast and, if so, whether these nodes are attached to other structures.
The letter M followed by a 0 or 1, is whether the cancer has spread to other distant organs.
Classified for the subgroups, is done with numbers ranging from I to IV.
STADIUM I: indicates that the tumor is less than 2 cm and no metastasis. The survival rate for 5 years is 98%.
STADIUM II: covers the following situations:
It is more than 2 cm but the lymph nodes in the armpit are affected.
Measure 2 to 5 cm and may or may not have spread.
Is larger than 5 cm but the axillary lymph nodes are not affected. The survival rate at 5 years is 88-76%.
STADIUM III is divided into stadium IIIA and IIIB:
Stadium III A can integrate the following ways:
The tumor is less than 5 centimeters and has spread to axillary lymph nodes and these are linked together or to other structures.
The tumor is larger than 5 cm and the axillary lymph nodes are affected. The survival rate for 5 years is 56%.
Stadium III B can be given in the following cases:
The cancer has spread to other tissues near the breast (skin, chest wall, including ribs and chest muscles).
The cancer has spread to lymph nodes inside the chest wall near the sternum.The survival rate for 5 years is 46%.
STADIUM IV: occurs when the cancer has spread to other structures of the body. The organs in which metastasis tends to occur most often are the bones, lungs, liver or brain. It could also be that the tumor has affected locally to the skin. The survival rate for 5 years is 16%.
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