title: Bone-metastasizing primary renal tumors in children.
abstract: Six cases of childhood renal tumor with extensive bone involvement are reported. The neoplasms had been classified originally as Wilms tumor with atypical clinical and pathologic features. Subsequent to a retrospective histologic analysis, the lesions were reclassified as follows: three cases as bone-metastasizing renal tumors of childhood, one case as rhabdomyosarcoma, one case as undifferentiated sarcoma, and one case as undifferentiated malignant neoplasm.
mesh_terms: D000293:Adolescent; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary*; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007223:Infant; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D009392:Nephrectomy; D011859:Radiography; D012189:Retrospective Studies; D012208:Rhabdomyosarcoma / Q000473:pathology; D012509:Sarcoma / Q000473:pathology; D009396:Wilms Tumor / Q000473:pathology