Fig. 1From: Primary Ewing sarcoma/peripheral primitive neuroectodermal tumors in the cranial bone and mobile spine: what is the difference?A case of lesion located in the cranial bone with bony destruction. a, b Four months before surgery, a solid appearance was observed and the border was relatively clear. c, d One week before surgery, the tumor is larger than it was three months ago. e, f Five months after initial surgery, tumor recurrence was observedBack to article page