Chronic graft versus host disease presenting with polymyositis.
D016026:Bone Marrow Transplantation; D002648:Child; D006086:Graft vs Host Disease / Q000209:etiology*; D006801:Humans; D007945:Leukemia, Lymphoid / Q000628:therapy; D008297:Male; D009220:Myositis / Q000209:etiology*