Abstract
Cardiac lipomatous hypertrophy is a rare benign condition that usually involves the interatrial septum. Due to its benign nature it rarely requires intervention. Its presence outside the interatrial septum is reported infrequently. We present a case of lipomatous hypertrophy in the intraventricular septum that was complicated by a severe, symptomatic, and disabling dynamic left ventricular outflow tract obstruction. The symptoms significantly improved following the excision of the mass. In our case transthoracic echocardiogram was used to visualize the mass and measure the severity of the obstruction; Cardiac Magnetic Resonance Imaging was used to characterize the mass and histopathology confirmed the diagnosis.
Highlights
Cardiac lipomatous hypertrophy is a rare condition, which was first described in 1964 involving the interatrial septum (IAS)
Cardiac lipomatous hypertrophy differs from a lipoma by its location in the IAS, absence of a capsule, and the presence of fetal fatty tissue
We present a case of lipomatous hypertrophy in the intraventricular septum complicated by severe, symptomatic, and disabling dynamic left ventricular outflow tract obstruction
Summary
Cardiac lipomatous hypertrophy is a rare condition, which was first described in 1964 involving the interatrial septum (IAS). It is rarely diagnosed because of lack of specific clinical symptoms. Cardiac lipomatous hypertrophy differs from a lipoma by its location in the IAS, absence of a capsule, and the presence of fetal fatty tissue. Its presence in the myocardium outside of the IAS has been reported very infrequently. It is typically a benign finding requiring no intervention. We present a case of lipomatous hypertrophy in the intraventricular septum complicated by severe, symptomatic, and disabling dynamic left ventricular outflow tract obstruction
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