The skeletal abnormalities associated with hemophilia and other bleeding diatheses are characteristic. They result from hemorrhage in soft tissue, muscle, and subperiosteal, intraosseous, and intra-articular locations. In involved joints, typical findings are radiodense effusions, regional or periarticular osteoporosis, subchondral bony erosions and cysts, and joint space narrowing. Hyperemia may lead to epiphyseal overgrowth in a child affected by these disorders. Tumor-like lesions are occasionally encountered that are due to massive subperiosteal, osseous, or soft tissue hemorrhage, with erosion and distortion of adjacent bone. Hemosiderin deposition in any of these disorders leads to characteristic findings on magnetic resonance imaging. The differential diagnosis is usually not difficult when both clinical and imaging features are studied. The candidate will learn the mechanics of putting together an electronic poster presentation in lecture type format. This will be an official peer-reviewed publication. The publication will be a favorable addition to the candidate's CV. The candidate will be the first author, and I am the second author. A candidate is not limited to completing one project. He/she can do as many as they like! (There are always topics to teach about) The candidate, myself, King's College Hospital Department of Radiology and King's College all benefit from this publication.