Staphylococcus lugdunensis native tricuspid valve endocarditis: a case report and review of literature.

Coagulase negative staphylococci are skin commensals and are generally disregarded as contaminants in clinical specimens. Repeated isolation of coagulase negative staphylococci in blood cultures should warrant a species identification to recognize unusually virulent organisms that demand aggressive treatment, such as Staphylococcus lugdunensis. Staphylococcus lugdunensis is known to cause a wide variety of infections, including a predominant left-sided endocarditis. We report a rare case of native tricuspid valve Staphylococcus lugdunensis endocarditis in a non-intravenous drug user and include a brief literature review.