What does it mean to have Stage 1 breast cancer?
In Stage 1 breast cancer, cancer is evident, but it is contained to only the area where the first abnormal cells began to develop. The breast cancer has been detected in the early stages and can be very effectively treated.
Stage 1 can be divided into Stage 1A and Stage 1B. The difference is determined by the size of the tumor and the lymph nodes with evidence of cancer.
Stage 1A breast cancer means the following description applies:
The tumor is smaller than the approximate size of a peanut (2 centimeters or smaller) AND has not spread to the lymph nodes.
Stage 1B breast cancer means one of the following descriptions applies:
Lymph nodes have cancer evidence with small clusters of cells between the approximate size of a pinprick to the approximate width of a grain of rice (.2mm to 2.0 mm).
No actual tumor is found in the breast.
The tumor is smaller than the approximate size of a peanut (2 centimeters or smaller).
Similar to stage 0, breast cancer at this stage is very treatable and survivable. When breast cancer is detected early, and is in the localized stage, the 5-year relative survival rate is 100%.