title: Late metastasis fro neuroblastoma mimicking Ewing's sarcoma.
abstract: The case of an unusual late metastasis of neuroblastoma to the calcaneum, appearing as a sole recurrence 9 years after surgery, is reported. The radiographic features of the osseous lesion were very suggestive of primary bone malignancy, Ewing's sarcoma as the first option, with extraosseous spread to the soft tissues.
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary / Q000601:surgery; D002111:Calcaneus / Q000000981:diagnostic imaging; D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009447:Neuroblastoma / Q000000981:diagnostic imaging* / Q000556:secondary / Q000601:surgery; D011859:Radiography; D012512:Sarcoma, Ewing / Q000000981:diagnostic imaging*; D013997:Time Factors