Presentation
Pain in the arm associated with swelling.
Patient Data
Age: 25 years
Gender: Male
From the case:
Osteoid osteoma
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/27432/annotated_viewer_json?iframe=true\u0026lang=us"}
X-ray shows a sclerotic cortical thickening of the mid shaft of the ulna with a lucent area within representing a nidus. Soft tissue swelling is noted at the site of thickening.
Rest of the bones appear normal.
From the case:
Osteoid osteoma
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/27433/annotated_viewer_json?iframe=true\u0026lang=us"}
Red arrow: cortical thickening
Yellow arrow: nidus
Case Discussion
Case of osteoid osteoma, which account for 10% of benign bone tumors with a higher incidence in young males.