Diagnosis of Ewing Sarcoma
To diagnose Ewing sarcoma, a pediatric oncologist will take a biopsy of the tumor and bring those tumor cells to the lab. Looking at the cells under a microscope allows physicians to determine the specific tumor type.

The patient will receive x-rays and an MRI of the tumor area, as well as a CT scan of the chest to find out whether the cancer has spread to the lungs. A radioisotope scan of all the bones in the body will confirm whether there is disease in any other bones.

The patient will also undergo a bone marrow biopsy to determine whether cancer is present in the marrow or blood.