[Uterine leiomyosarcoma which spread through the vena cava to the pulmonary artery]

We describe a case of uterine leiomyosarcoma with four elongations that, through the vena cava, reached the pulmonary artery, left atrium, and right renal artery respectively. Clinical features suggested congenital pulmonary artery stenosis with pulmonary emboli. Clinical diagnosis was not made in spite of angiography and radionuclide scans. We review the literature on the subject. We also discuss the amenability of surgical correction as well as the mechanisms of the intravenous growth of this type of tumor.