Mitral Valve Blood Cyst Diagnosed with the Use of Multimodality Imaging

[Display omitted] •Intracardiac blood cyst is a rare congenital abnormality that can be found in adults.•It is most commonly attached in the valves, particularly the mitral valve.•Echocardiography is the imaging modality of choice for the diagnosis of blood cyst.•Cardiac MRI contributes to the diagnosis, typically showing absence of cyst enhancement.•Conservative management is reasonable in the absence of effects on cardiac function.