Figure 3a. Endocarditis of the tricuspid valve in a 24-year-old male IV drug user. Parasternal short-axis views from echocardiography, obtained during systole (a) and diastole (b), show a mobile echogenic mass (arrow) related to the tricuspid valve, a finding consistent with a vegetation. Chest radiography showed multiple septic pulmonary emboli. LV = left ventricle, RA = right atrium, RV = right ventricle.