Staphylococcus lugdunensis endocarditis with isolated tricuspid valve involvement.

Staphylococcus lugdunensis is often misidentified as S aureus and as a rare cause of infective endocarditis. The clinical course of S lugdunensis endocarditis is aggressive and the mortality rate is high in contrast to S epidermidis endocarditis. Most reported cases of S lugdunensis endocarditis have involved mitral or aortic valves. Herein, we present a case with isolated tricuspid endocarditis due to S lugdunensis.