title: Multiple lytic bone lesions.
mesh_terms: D001706:Biopsy; D001862:Bone Resorption / Q000175:diagnosis*; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005357:Fibrous Dysplasia of Bone / Q000175:diagnosis*; D006801:Humans; D008297:Male; D009456:Neurofibromatosis 1 / Q000175:diagnosis / Q000473:pathology