RESUMEN
Objective: To observe the value of preoperative multi-slice spiral CT angiography (MSCTA) and intraoperative assisted ultrasound in application of laparoscopic kidney-preserving surgery for treating small renal cancer (tumor diameter ≤4 cm). Methods: A total of 85 patients with small kidney cancer underwent retroperitoneal laparoscopic nephron-sparing surgery, including 43 underwent preoperative MSCTA and intraoperative assisted ultrasound (observe group) and 42 underwent preoperative routine renal ultrasound and CT examination (control group). The relevant indicators were compared between the two groups. Results: Preoperative MSCTA findings of observe group were consistent with intraoperative findings. The operative time, intraoperative heat ischemia time, intraoperative blood loss and postoperative hospital stay in observe group were all less than those in control group (all P0.05), while the postoperative GFR of control group was lower than that before surgery (P=0.040). Conclusion: Preoperative MSCTA and intraoperative auxiliary ultrasound during retroperitoneal laparoscopic nephron-sparing surgery for patients with small renal carcinoma can reduce intraoperative blood loss and positive rate of resection margin, reserve as much nephrons as possible to promote the recovery of renal function.