Cardiobacterium hominis endocarditis presenting as acute embolic stroke: a case report and review of the literature.

We report on a case of endocarditis attributable to Cardiobacterium hominis in a 31-year-old man who presented with acute-onset, left-sided hemiparesthesia. Magnetic resonance imaging of the brain showed acute infarctions in 2 areas of the right cerebral cortex, and a transesophageal echocardiogram revealed vegetation in a previously unrecognized bicuspid aortic valve. The patient completed a 6-week course of ceftriaxone and aspirin, with resolution of the vegetation and neurological complications. Our literature review of C. hominis endocarditis suggests that aortic-valve involvement is associated with high stroke and valve-surgery rates. Favorable outcomes and treatment success are evident with either penicillin or ceftriaxone, in combination with (if indicated) valve surgery in patients with neurological complications.