Dynamic left ventricular outflow tract obstruction in a patient with pheochromocytoma

Symmetric left ventricular hypertrophy or asymmetric septal hypertrophy ass ociated with pheochromocytoma simulating hypertrophic obstructive cardiomyo pathy have been rarely reported.(1-3). In this report, we present a case wi th pheochromocytoma that had dynamic left ventricular outflow tract obstruc tion without asymmetric septal hypertrophy. A surface echo revealed resolut ion of the systolic anterior motion of the mitral valve and all Doppler evi dence of left ventricular outflow tract obstruction following removal of th e tumor. Dynamic left ventricular outflow tract obstruction seen in this pa tient was probably due to excessive secretion of cathecolamines by the tumo r.