URMC / Encyclopedia / Collection Understanding Your Diagnosis Ewing Sarcoma: Diagnosis X-rays of the Extremities X-rays of the Spine, Neck, or Back Bone Scan Computed Tomography (CT) Scan of the Bones Magnetic Resonance Imaging (MRI) of the Bones, Joints, and Soft Tissues Bone Biopsy Ewing Sarcoma: Newly Diagnosed Ewing Sarcoma: Stages Ewing Sarcoma: Tests After Diagnosis