感染性心内膜炎：见主动脉瓣处有一大而不规则的红褐色赘生物。毒力强的细菌，如金黄*色葡萄球菌，引起“性细菌性心内膜炎，而一些毒力较弱的细菌，如草绿色链球菌，则引起亚急性细菌性心内膜炎。
This is infective endocarditis. The aortic valve demonstrates a large, irregular, reddish tan vegetation.Virulent organisms, such as Staphylococcus aureus, produce an "acute" bacterial endocarditis, while some organisms such as Streptococcus viridans produce a "subacute" bacterial endocarditis.