Intravenous leiomyoma extending into the right ventricle

We present a case of a retroperitoneal leiomyoma invading the inferior vena cava and extending to the right ventricle. The tumor was visualized with electrocardiographic-gated dual-source computed tomography, showing a low-density, lobulated mass invading the inferior vena cava and prolapsing through the tricuspid valve during diastole. Cardiac computed tomography is useful in assessing the extension and hemodynamic effect of intracardiac masses.