Renal Vein Thrombosis Misdiagnosed as a Renal Cell Carcinoma with a Tumor Thrombus in the Inferior Vena Cava


*Department of Urology, Osaka Medical Center for Cancer and Cardiovascular Diseases, 1-3-3 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan


A 69-year-old man was diagnosed with a right renal carcinoma with a tumor thrombus in the inferior vena cava, and underwent a radical nephrectomy. The entire specimen was examined by step-wise sectioning and found to be a thrombus with extensive hemosiderin deposits and recánalization which contained no malignant cells.