Conclusions
The cardiac blood cyst is a rare benign primary tumor of the heart. The
difference in location can cause different hemodynamic effects. Small
blood cyst which causes no hemodynamic effects do not require any
treatment and only requires regularly followed up. When the hemodynamic
changes are caused, the operation can be performed and the prognosis is
good. Transthoracic and transesophageal echocardiography can increase
the diagnostic accuracy and transesophageal echocardiography is
sensitive to small cyst less than 5mm. To manage the echocardiography
characteristics of the cardiac blood cyst, it is helpful by doing early
detection, diagnosis, and clinical treatment.