title: Renal papillary necrosis caused by long-term ingestion of pentazocine and aspirin.
mesh_terms: D001241:Aspirin / Q000008:administration & dosage / Q000009:adverse effects*; D004357:Drug Synergism; D006801:Humans; D007679:Kidney Medulla / Q000187:drug effects; D007681:Kidney Papillary Necrosis / Q000139:chemically induced*; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000188:drug therapy; D010423:Pentazocine / Q000008:administration & dosage / Q000009:adverse effects*; D013997:Time Factors
chemical_list: D001241:Aspirin; D010423:Pentazocine