Walter E.Madsen, MD

Dr._Madsen

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.

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meet the team

Peder Horner, MD

PHonerDr. Peder Horner is an interventional radiologist with Diversified Radiology of Colorado.  He completed medical school at University of Kansas, Kansas City, Missouri; then went on to complete his diagnostic radiology residency at Oregon Health and Science University in Portland, Oregon.  He completed his fellowship in vascular and interventional radiology at Oregon Health and Science University as well. Dr. Horner and his interventional radiology colleagues are key members of the extremity tumor service line. Their expertise in biopsy and intra-arterial chemotherapy is imperative in the post-treatment outcomes for osteosarcoma. 

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