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Cerebral ischemia caused by Streptococcus bovis aortic endocarditis: case report
Leopoldo Santos-Neto1, Camila Gangoni, Viviane Pereira
1Hospital Universitário de Brasília, Universidade de Brasília, Brasília, DF, Brazil. leoneto@uninet.com.br
Insights
This case highlights rare cerebral ischemia from Streptococcus bovis endocarditis. Hemianopsia preceded diagnosis, emphasizing the need for early recognition of this serious complication.
Area of Science:
- Neurology
- Infectious Diseases
- Cardiology
Background:
- Infective endocarditis caused by Streptococcus bovis is uncommon.
- Cerebral ischemic events are rare complications of S. bovis endocarditis.
Observation:
- A 50-year-old man presented with frontal, parietal, and occipital lobe cerebral ischemia.
- Hemianopsia was the initial symptom, preceding the diagnosis of S. bovis endocarditis.
- Clinical presentation initially suggested systemic vasculitis.
Findings:
- Vegetating lesions were identified on the aortic valve.
- Blood cultures confirmed the presence of Streptococcus bovis.
- Antibiotic therapy and aortic valve replacement successfully treated the infection and prevented further thromboembolic events.
Implications:
- This case expands the understanding of rare neurological manifestations of S. bovis endocarditis.
- Early recognition of symptoms like hemianopsia is crucial for timely diagnosis and management.
- The absence of mucosal lesions in this case suggests alternative, yet to be identified, portals of entry for S. bovis.
Abstract:
Cerebral ischemic processes associated with infective endocarditis caused by Streptococcus bovis are rare; only 2 cases having been reported. Here we report a case of a 50-year-old man with S. bovis endocarditis who presented signs of frontal, parietal and occipital lobe cerebral ischemia. This is the first case reported in which the presence of hemianopsia preceded the endocarditis diagnosis. Initially, the clinical manifestations suggested a systemic vasculitis. Later, vegetating lesions were identified in the aortic valve and S. bovis grew in blood cultures. Antibiotic use and aortic valve replacement eliminated the infection and ceased thromboembolic events. A video colonoscopy examination revealed no mucosal lesions as a portal of entry in this case, although such lesions have been encountered in up to 70% of reported cases of S. bovis endocarditis.
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