title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 36-1980.
mesh_terms: D000368:Aged; D001011:Aorta / Q000473:pathology; D004697:Endocarditis, Bacterial / Q000175:diagnosis / Q000382:microbiology / Q000473:pathology*; D006325:Heart Atria / Q000473:pathology; D006801:Humans; D007710:Klebsiella Infections / Q000382:microbiology / Q000473:pathology*; D007711:Klebsiella pneumoniae / Q000302:isolation & purification; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects