เคมีบำบัดไม่จำเป็นต่อผู้ป่วยมะเร็งทรวงอกทุกคนเสมอไป

After a diagnosis of breast cancer, many women have surgery followed by chemotherapy and radiation. But a new study shows that if it's caught early enough, women might be able to avoid the chemotherapy. VOA's Carol Pearson has more.