ABSTRACT:
A four year old boy was diagnosed with hypertrophic cardiomyopathy with
moderate degree of obstruction of the left ventricular outflow tract,
secondary to asymmetric septal hypertrophy during infancy.
Echocardiogram on follow up showed increase in left ventricular outflow
tract obstruction and appearance of an aneurysm in the membranous
portion of interventricular septum. The appearance of the membranous
septal aneurysm may be related to the direction of jet arising from the
point of contact of the anterior mitral leaflet with the hypertrophied
basal septum and hitting this part of the interventricular septum.