Abstract
A 44‑year‑old male patient was referred to our department with
unremarkable physical examination and laboratory data due to a mass
which was incidentally found in the right atrial during a routine
examination.Transthoracic and transesophageal echocardiography revealed
a 46×30 mm, well-delimited, non-mobile mass in the superior portion of
the right atrium. Besides the intracardiac mass, another low density was
detected in adjacent pericardial cavity at cardiac computed tomography
;he extracardiac mass appeared to be caused by invasive growth from the
intracardiac mass.An operation was performed through right anterolateral
minithoracotomy with the patient under hypothermic cardiopulmonary
bypass. During operation, it was found that the surface of the right
atrium was covered by an adipose mass (30×40 mm; Fig. 2A). Intracardiac
mass also showed yellow adipose tissue (40×50 mm; Fig. 2B). Both parts
of the mass infiltrated the myocardium. The mass was resected
completely; and right atrium was reconstructed by using bovine
pericardium pad. After the operation, the pathology confirmed the both
intracardiac and extracardiac tissues as lipoma; transthoracic
echocardiogram showed the atrial mass was removed completely and the
left ventricular ejection fraction was normal . The patient’s
postoperative course was uneventful and he was discharged home after 7
days.