Medical oncologist Medical oncologist Sam Benjamin, MD Sam Benjamin, MD, tells what to expect after a breast lump is discovered. MD/PhD student Ryan O'Dell discusses the antipsychotic medications in use today. Nurse and chiropractor, tells what to expect after a breast lump is discovered. MD/PhD student Ryan O'Dell discusses the antipsychotic medications in use today. Nurse and chiropractor Denise Karsten Denise Karsten explains her approach to helping patients with back problems. explains her approach to helping patients with back problems.