RESUMO
The aim of this study was to identify variants of retroperitoneal vascular structure during systematic paraaortic lymphadenectomy in patients with early-stage cervical cancer and to investigate the effects of these anomalies in surgical procedures. 79 patients who had undergone systematic paraaortic and bilateral pelvic lymph node dissection between 2006 and 2013 were included. Normal architecture and structural anomalies of inferior vena cava, renal arteries and veins, common iliac vein and ovarian vessels were studied. Variants of major retroperitoneal vascular structure were present in 10 patients (12.7%). Variants of renal vessels were identified in 8 patients (10.1%): supernumerary renal arteries and veins observed in 5 patients (6.3%); retroaortic left renal vein type I and II - in 3 patients (3.8%). A rare variant as double vena cava inferior was detected in 1 patient (1.3%). Vessel injury was present no one case in patients with variants of vascular structures and in 1 of 69 (1.4%) patients without variants of retroperitoneal vascular structure. There was no difference in intraoperative hemorrhage, transfusion red blood cell and rate of intraoperative hemoglobin between the groups. Thus the acquisition of knowledge and visualization of vascular variations decrease complications during systematic paraaortic and bilateral pelvic lymphadenectomy.
