An unusual case of isolated right-sided infective endocarditis masquerading as non-resolving pneumonia.

Right-sided infective endocarditis in non-intravenous drug abusers and non-immunocompromised patients is rare. The diagnosis is difficult as it can present as a respiratory illness leading to delays in diagnosis and development of complications, which can be fatal. The standard Duke criteria may not be adequate for diagnosis. We present a patient with isolated right-sided infective endocarditis mimicking right lower lobe non-resolving pneumonia who did not respond to antitubercular therapy.