title: Small cell tumor in a 24-year-old male.
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis / Q000648:ultrastructure*; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D007085:Ilium; D008297:Male; D008854:Microscopy, Electron; D012208:Rhabdomyosarcoma / Q000175:diagnosis / Q000648:ultrastructure*; D012512:Sarcoma, Ewing / Q000175:diagnosis