title: Direct venous extension of renal cell carcinoma to common iliac vein with patent main renal vein.
mesh_terms: D000368:Aged; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D006801:Humans; D007084:Iliac Vein / Q000000981:diagnostic imaging / Q000473:pathology*; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography; D012082:Renal Veins / Q000000981:diagnostic imaging / Q000473:pathology*; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging