Lipomatous Hypertrophy of the Interatrial Septum Accompanied By Interatrial Septal Lipoma

Abstract

Lipomatous hypertrophy of the interatrial septum (LHIS) is usually an incidentally detected benign disorder which is asymptomatic in most of the cases. On the other hand, cardiac lipomas are rare benign cardiac tumors. In transthoracic echocardiography (TTE) of a 77-year-old male patient, who was admitted with the complaint of dyspnea, homogeneous hypertrophic interatrial septum (IAS) was observed. Transesophageal echocardiography (TOE) detected a mass lesion on IAS in addition to LHIS. In cardiac magnetic resonance imaging (MRI), LHIS and an 18*16 mm diameter mass in line with lipoma was observed in interatrial septum. Cardiac lipomas and LHIS are often benign formations yet they may require surgery in circumstances such as being symptomatic and/or large in diameter. Cardiac MRI, TTE, and TOE images of a patient with LHIS and interatriyal septal lipoma extending into right atrial cavity are presented in this paper.