Tricuspid Stenosis : Acquired tricuspid stenosis is most often due to chronic rheumatic carditis. Rarely could it be due to right atrial tumors or carcinoid syndrome producing mixed stenosis and regurgitation. Right ventlicular endomyocardial fibrosis, vegetations on valve cusps or on pacing leads can give rise to a picture of tricuspid stenosis. Rheumatic bicuspid stenosis occurs in association with mitral and aortic valve affection. In postmortem, the incidence could be as high as 15 per cent whereas clinically it manifests only in 5 per cent of cases.