bone, cases Week 300: Case 6 April 26, 2023 pathadmin 1. Presented by Edward McCarthy, M.D. and prepared by Marc Lewin, M.D.A 35 year old woman had a swelling around her shoulder for the past year. A radiograph demonstrated an irregular bony mass protruding from the lateral aspect of her humerus.Conventional osteosarcomaOsteochondromaParosteal osteosarcomaHeterotopic ossification 1. Presented by Edward McCarthy, M.D. and prepared by Marc Lewin, M.D.A 35 year old woman had a swelling around her shoulder for the past year. A radiograph demonstrated an irregular bony mass protruding from the lateral aspect of her humerus.