KEYWORDS
cardiac
hemangioma, cardiac primary tumor, transthoracic
echocardiography
A 67-year-old female patient with a 8-month history of sigmoid colon
cancer resection was readmitted to our hospital due to routine
follow-up. The presurgical transthoracic echocardiography (TTE) result
was unremarkable (Figure 1A).
The TTE examination revealed that the right atrium (RA) had a hypoechoic
neoplasm, about 4.3x3.8 cm, round, clear boundary, hyperechoic capsule,
and attached to the wall (Figure 1B). The neoplasm broke into the
tricuspid valve during diastole and returned to the RA during systole,
leading to moderate regurgitation
of the tricuspid valve during systole (Figure2; Videoclip S1). The
marked hypoechogenicity and hyperechoic capsule may be the
characteristic of cardiac hemangioma, which are related to thrombus and
blood clots formed in the vascular lumen, and complete envelope1-3.Contrast-enhanced computerized tomography (CT) of
the chest showed low-density masses with slight enhancement in the RA
(Figure 3).
Surgical clipping of the atrial tumor was performed. The excised
specimen was dark red in color and
had a complete envelope. Histopathological examination showed tissue
with benign endothelial cells and large communicating lumens consistent
with a cavernous hemangioma (Figure 4). The subsequent recovery were
uncomplicated and the patient was discharged 1 weeks after the
operation.