Aspergillus is an opportunistic nosocomial fungus generally associated with
a high mortality rate. A niger has been rarely associated with infection,
and most cases have occurred in patients who have recently undergone heart
surgery or in immunocompromised patients. We present a case of an immunocom
petent patient with A niger endocarditis which illustrates the difficulties
in diagnosis and the possible insidious course of fungal endocarditis.