[Two-stage Surgery for Uterine Intravenous Leiomyomatosis with Right Ventricular Extension;Report of a Case].

Intravenous leiomyomatosis is a rare neoplastic condition characterized by the benign intravascular proliferation of smooth muscle cells originating from either the uterine venous wall or a uterine leiomyoma. In the present report, we describe the case of a 36-year-old woman, who was referred to our institution due to abdominal pain. Computed tomography indicated the presence of a giant intravenous leiomyoma originating from the uterus and extending to the right ventricle with complex pathways. The patient was successfully treated by tumor resection under circulatory arrest in two-stage operations in conjunction with gonadotrophin-releasing hormone agonists therapy. She continued to recover and did not exhibit any recurrence at the 8-month follow-up.