title: An unusual soft tissue sarcoma in a 33-year-old male.
mesh_terms: D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D012509:Sarcoma / Q000175:diagnosis / Q000473:pathology / Q000648:ultrastructure*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000648:ultrastructure*