Abstract
Infective endocarditis (IE) due to Streptococcus pyogenes (SP) (Group A Streptococcus) is uncommon and infectious renal artery aneurysm (IRAA) is an exceptional complication of IE, with few cases reported in the literature.We describe a case of SP native mitral valve IE in a 58-year-old man, presenting with large valve vegetations, abscess and severe regurgitation. Initial CT-angiography showed bilateral kidney and splenic infarcts.He underwent successful emergent bioprosthetic valve replacement. Antibiotic regimen consisted in linezolid and rifampicin for 8 weeks. Three months later, CT-angiography for feet gangrene revealed a 16mm aneurysm of the left intraparenchymal renal artery, which was occluded by coil-embolization.This case shows that an infectious aneurysm may develop several months after antibiotic treatment and emergent valve replacement for IE.
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