How long can a person with stage 4 breast cancer survive?

Need more info.: This is hard to answer without knowing the specific biology of the cancer and which organs are involved. Nowadays, we consider stage IV breast ca like a chronic illness; one we cannot cure, but we can often manage and control very well.

Stage IV: When the cancer spreads beyond the primary organ- here- is breast- ; it is considered to be a stage IV disease. It is treatable- however it is incurable. Statistically, the 5 year survival in stage IV breast cancer is approximately 20 %.