ARP15 Acta Radiológica Portuguesa, Vol.XXII, nº 87, pág. 15-30, Jul.-Set., 2010 Imaging of Soft Tissue Tumors: A Systematic Approach Mark D. Murphey Chief, Musculoskeletal Radiology Department of Radiologic Pathology, Armed Forces Institute of Pathology Walter Reed Army Medical Center, Uniformed Services University of the Health Sciences