IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Ewing sarcoma

Case contributed by Iqbal Naseem
Diagnosis probable

Presentation

Pain and soft tissue swelling in right arm for the last 2-3 months.

Patient Data

Age: 12 years
Gender: Female
x-ray

Radiograph right arm AP projection showing linear continuous type of periosteal reaction on lateral aspect of proximal-mid humeral shaft with associated large soft tissue swelling.

Also seen is subtle osteopenia in humeral shaft s/o of diffuse marrow infiltration .

Case Discussion

Ewing sarcoma is highly malignant bone tumor seen in first two decades of life.

Although "Onion Peel" type of periosteal reaction is hallmark of this tumor but this is seen only in 25-30% of cases. Diaphyseal involvement and associated large soft tissue swelling are characteristic feature. Systemic features can mimic osteomyelitis.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.