Bernard Fisher (scientist)

Bernard Fisher, MD, FACS (August 23, 1918 – October 16, 2019) was an American surgeon. He was known for his works in the biology and treatment of breast cancer. 
He was Chairman of the National Surgical Adjuvant Breast Project at the University of Pittsburgh School of Medicine. His work helped spot that early-stage breast cancer could be treated better by lumpectomy, in combination with radiation therapy, chemotherapy, and/or hormonal therapy, than by radical mastectomy.