Pure laparoscopic radical nephrectomy and inferior vena caval tumor thrombus removal in patients with complicated renal tumor

To the Editor:Renal carcinoma is one of the most commonly encountered urological malignant carcinomas,accounting for 2%to 3%of all adult malignant carcinomas;mortality is over 40%.[1]With recent developments in medical technology,surgical,and auxiliary treatment of renal carcinoma has improved greatly.Once considered as a high-risk group,patients with renal carcinoma and inferior vena caval tumor thrombosis can receive ideal treatment now.