A case of left ventricular outflow tract obstruction caused by a parachute accessory anterior mitral valve leaflet is presented. The abnormality was detected in an asymptomatic patient by systolic murmur and thrill and was demonstrated by echocardiography, as well as by cardiac catheterization and surgery. These findings are presented. Several previously reported cases of a similar nature are r...

Fifty-three specimens in which the primary diagnosis in life was coaretation of the aorta were examined; only nine had a mitral valve of normal size and configuration. Ten specimens had a normally formed valve mechanism which was small in comparison to both tricuspid valve and left ventricle. Three other specimens had a normally formed but small valve which exhibited a short free margin of the ...

Fifty-three specimens in which the primary diagnosis in life was coaretation of the aorta were examined; only nine had a mitral valve of normal size and configuration. Ten specimens had a normally formed valve mechanism which was small in comparison to both tricuspid valve and left ventricle. Three other specimens had a normally formed but small valve which exhibited a short free margin of the ...