Stage IB means some cancer cells, but just tiny amounts, have been found in a few lymph nodes.
Stage II. At stage 2 breast cancer, the cancer has grown, spread, or both
IIA means the tumor in the breast is still small, if there’s one at all. There may be no cancer in the lymph nodes, or it may have spread to as many as three.
IIB breast tumor is bigger — it may be the size of a walnut or as big as a lime. It may or may not be in any lymph nodes.
Stage III. Thebreast cancer has not spread to bones or organs, but it’s considered advanced, and it’s harder to fight.