In Ewing sarcoma, X-ray shows lytic bone lesions referred to as onion skin appearance, because the periosteum looks like a sliced onion bulb.

在尤因肉瘤中，X线显示溶骨性病变，称为“洋葱皮样”外观，因为骨膜看起来像一个切开的洋葱球。