Table 1.

Summary table for uterine intravenous leiomyomatosis with intracardiac extension.

Age predilection	Patients are usually between 20 and 70 years of age, with an average age at presentation of 45 years
Gender	Female
Incidence	Less than 300 cases have been reported and fewer than 100 cases with cardiac involvement Extra-uterine involvement is seen in 30% to 80% of cases of uterine intravenous leiomyomatosis, with cardiac involvement in 10% to 30%
Risk factors	History of leiomyomatosis, myomectomy or hysterectomy
Treatment	Surgical: including a combined multidisciplinary thoraco-abdominal surgical approach
Prognosis	Usually benign
Findings on imaging	Ultrasound: a floating mass occupying the IVC, right atrium, and right ventricle characterized by intralesional vascularization with a triphasic CDUS waveform Computed Tomography: heterogeneous enhancing mass directly extending into the IVC; typical “walking stick head” or “snake head” tumor masses are observed when the right heart is also involved