A case of cardiac lipoma in the ventricular septum

Abstract

Lipoma in the ventricular septum is very rare. Our review of the English literature revealed that our case is the sixth of removal of lipoma in the ventricular septum. A 60-year-old male was admitted because a mass in the ventricular septum was found incidentally in abdominal CT taken following type B hepatitis. CT scanning of the heart showed 2 cm diameter of tumor in the ventricular septum. The tumor had very low radiodensity, so it was thought to be identical to fat tissue. The tumor was more clearly visualized by MR imaging and the signal intensity was high on the T1-weighted image. The tumor was suspected to be lipoma. The intraoperative histological diagnosis showed the tumor was lipoma. The tumor adhered strictly on the myocardium of the septum, and it was located near the left anterior descending coronary artery. It could not completely resected, in these reasons. Postoperative course was uneventful, and echocardiogram taken 9 months after the operation showed no evidence of enlargement of the residual tumor. It is necessary to follow-up rigidly for the potential of enlargement of the residual tumor.

Voluminous Intrapericardial Lipoma Mimicking Pericardial Effusion

“…Often, lipomas arise from the epicardial fat and grow into the pericardial sac [ 11 ]. However, there are case reports of distinct sites, such as the right atrium [ 10 ], left atrium [ 21 , 22 ], tricuspid valve [ 23 , 24 ], mitral valve [ 25 ], right ventricle [ 26 ], left ventricle [ 20 , 27 ], interventricular septum [ 12 , 28 ], and inside the ventricular cavities themselves [ 29 ]. Size ranges from 1 to 15 cm in diameter, and weight such as 2 kg is described [ 20 ].…”

Intrapericardial Giant Lipoma Displacing the Heart

“…The most common intracardiac localisation is in the right atrium [8–10] with a wide peduncle originating either from the septal wall or atrial roof. They have also been described in the pericardium [11, 12], in the left atrium [10, 13, 14], on the tricuspid valve [15, 16], on the mitral valve [17], in the right [10] and left ventricles [18], in the ventricular septum [19], and even in both ventricular cavities [20]. …”

Cardiac Lipoma in the Ventricular Septum - A Case Report

“…In about 50 % of cases, lipomas are intracavitary, 25 % are intramyocardial, and the remaining 25 % extracavitary [3]. A lipoma in the interventricular septum is extremely rare and, to the best of our knowledge, there are only 7 previous case reports of lipomas located on the interventricular septum in the left ventricle [4]. Symptoms are not characteristic and depend on the lipoma's location and size.…”