title: Parosteal osteogenic sarcoma arising from a chronic draining sinus.
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis / Q000209:etiology*; D002908:Chronic Disease; D006801:Humans; D007871:Leg Ulcer / Q000150:complications; D008297:Male; D008875:Middle Aged; D010019:Osteomyelitis / Q000150:complications*; D012516:Osteosarcoma / Q000175:diagnosis / Q000209:etiology*; D013977:Tibia