The aim of the study is to analyse the feasibility and safety of some complex surgical manoeuvres during vena cava trombectomy.Material and Methods. The study included 78 (62.9%) men and 46 (37.1%) women. The average age of patients was 58.4±10.5 years. There were right-sided tumours in 82 (66.1%) cases and left-sided tumours in 42 (33.9%). Caval thrombi were of levels I, II, II, and IV, respectively, in 35 (28.2%), 36 (29%), 27 (21.8%) and 26 (21%) observations. All operations were performed without the use of artificial circulation. Results of the study. Liver mobilization was technically difficult in 17.8% of observations and was accompanied by 17 (37.8%) intraoperative complications in 13 (28.9%) patients. The most severe complications were injuries to the hepatic parenchyma (11.1%) and the main hepatic veins (11.1%). Access to the supra-diaphragmatic section of the LAA and the right atrium was feasible in all observations with an intraoperative complication rate of 8.8%. No damage to the right diaphragmatic nerve was noted in any of the observations. The right pleural cavity was opened in 2 (5.9%) patients with atrial thrombi. Another patient (2.9%) had damage to the posterior wall of the inferior vena cava at the level of its intrapericardial segment. Thrombus apex palpation and milking maneuver were successful in 83.1% and 90% of patients, respectively.Conclusion. Removal of tumour thrombi from the IVC for renal neoplasms is a complex surgical intervention. It requires the use of a large number of special surgical manoeuvres and techniques, which are difficult to perform in 10% of patients and may be accompanied by severe intraoperative complications.