From the case:
Periosteal reactions (diagram)
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_pin":false},"extraPropsURL":"/studies/23938/annotated_viewer_json?lang=us"}
Schematic diagram of periosteal reactions, regardless of their cause. On top of this, there are complex or disorganized periosteal reactions, which could be a combination of any of these.