Fig. 4From: Preliminary experience of oblique occlusion technique in robot-assisted infrahepatic inferior vena cava thrombectomy: step-by-step procedures and short term outcomesStep-by-step procedures of oblique occlusion technique in robot-assisted infrahepatic Inferior vena cava thrombectomy: A The left renal artery was clipped with a Hem-o-lok and cut off. B The left renal vein was exposed and tumor thrombus could be seen in the thickened vein. C The left renal vein was dissociated and exposed. D The cephalic inferior vena cava was dissociated and exposed. E Short hepatic vein was cut off. F The caudal IVC, the contralateral renal vein and the cephalic IVC was fully exposed. G Intraoperative ultrasound was used to detect the range of tumor thrombus to ensure that there was no tumor thrombus in the right renal vein and the IVC below the renal vein. H Oblique blocking from the upper corner of the right renal vein to the lower corner of the left renal vein using a vessel tourniquet or a vessel clamp. I The cephalic IVC was clamped. J The IVC wall was cut, and the thrombus was removed. K The IVC incision was sutured. L The vessel tourniquet was released. M Postoperative photos suggested: left renal cell carcinoma with inferior vena cava tumor thrombusBack to article page