John D. Pfeifer, MD, PhD

John D. Pfeifer, MD, PhD, professor and vice chair for clinical affairs in the pathology and immunology department at Washington University School of Medicine in St. Louis. WUSTL.edu

Cancer Biopsy Mix-ups Are More Common Than You Think
Cancer

Cancer Biopsy Mix-ups Are More Common Than You Think

John D. Pfeifer, MD, PhD | October 20, 2017

Three out of 1,000 patients were told they had cancer when they didn’t and three out of 1,000 were told they didn’t have cancer when they did...