title: Peptococcus magnus endocarditis.
abstract: An 18-year-old man had an eventually fatal case of Peptococcus magnus endocarditis. Multiple emboli and continued valve destruction occurred during appropriate therapy. Penicillin therapy was associated with fever and neutropenia, thought to be due to an immunologic mechanism.
mesh_terms: D000293:Adolescent; D004697:Endocarditis, Bacterial / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male; D010460:Peptococcus