Renal Solitary Fibrous Tumor with Thrombus Extension into the Inferior Vena Cava and Right Atrium

Background: A solitary fibrous tumor (SFT) of the kidney with thrombus extended into the inferior vena cava (IVC) and right atrium (RA) is very rare. Methods and Conclusion: We reported here an extremely case of right renal SFT extended to the IVC and RA, treated late with an urgent RA mass removal and IVC thrombectomy.