Dr. Walt Madsen specializes in Surgical Pathology and Immuno-histochemistry. He received his MD from St. Louis University School of Medicine and went to the University of Illinois at Chicago and Cook County Hospital for internship and residency training in General Surgery. In addition to clinical surgery responsibilities, he conducted research on the effect of steroid hormones on sarcoma tumor cell growth as an American Cancer Society Oncology Fellow. Dr. Madsen completed his residency in Anatomic and Clinical Pathology at the University of Colorado and his fellowship in Surgical Pathology at Washington University in St. Louis, Barnes Hospital.