Least common site for vegetation is
Aerial stenosis
Mitral stenosis
Aerial septal defect
Mitral regurgitation
Ref Harrison 19 th ed pg 820 Infection most commonly involves hea valves but may also occur on the low-pressure side of a ventricular septal defect, on mural endocardium damaged by aberrant jets of blood or foreign bodies, or on intracardiac devices themselves. The analogous process involving aeriovenous shunts, aerio-aerial shunts (patent ductus aeriosus), or a coarctation of the aoa is called infective endaeritis.
General anatomy