title: Back pain and rapid neurologic deterioration in an elderly woman.
mesh_terms: D000368:Aged; D004697:Endocarditis, Bacterial / Q000473:pathology*; D005260:Female; D006349:Heart Valve Diseases / Q000473:pathology; D006801:Humans; D008943:Mitral Valve / Q000473:pathology*; D011655:Pulmonary Embolism / Q000473:pathology*; D013290:Streptococcal Infections / Q000473:pathology*; D013297:Streptococcus pyogenes