Figure 1. (A–E) Coronal slices of CECT images of the ICLM, taken preoperatively and postoperatively. (A) Preoperatively, the proximal end of the ICLM was located inside the right atrium at the level of T81. (B) Two weeks after BSO, the leiomyoma had shrunk dramatically, and the proximal end was located inside the IVC at the level of L32. (C) At 70 weeks after BSO, the leiomyoma had spread slowly, its proximal end being located inside the IVC at the level of L12. (D) At 119 weeks after BSO, the proximal end of the leiomyoma was located inside the IVC at the level of T101. (E) At 190 weeks after BSO, the proximal end was still located inside the IVC at the level of T101. (F, G) The expression of estrogen (ER) and progesterone (PR) were tested by immunohistochemistry. Immunohistochemical staining showed that the nuclei of smooth muscle cells were (F) 85% ER+ and (G) 70% PR+. 1 – thoracic vertebrae; 2 – lumbar vertebrae. BSO – bilateral salpingo-oophorectomy; CECT – contrast-enhanced computed tomography; ICLM – intracardiac leiomyomatosis; IVC – inferior vena cava.