THE RESULTS OF SURGICAL MANAGEMENT FOR CAVOATRIAL TUMOR THROMBOSIS DUE TO RENAL CELL CARCINOMA

Objective. Improvement the surgical management for cavoatrial tumor thrombosis due to renal cell carcinoma. Methods. The results of complex clinical, laboratory, instrumental examination, intraoperative observations and morphological studies were analyzed in 62 patients with renal cell carcinoma, complicated by cavoatrial tumor thrombosis, hospitalized to the vascular surgery department of Lviv regional clinical hospital for the period 1993-2019. Surgical treatment included radical nephrectomy, thrombectomy from inferior vena cava and right atrium. Kaplan-Meier method was used to evaluate the long-term survival of patients. Results. The postoperative complications included: posthemorrhagic anemia - 22 (38,6%), acute renal failure - 15 (26,3%), pulmonary embolism - 4 (7,0%), acute liver failure - 3 (5,3%), phlebothrombosis - 3 (5,3%), pneumonia - 3 (5,3%), stroke - 2 (3,5%), wound сomplications - 5 (8,8%) cases. Perioperative mortality was 11,3%. The causes of death included: hemorrhagic shock - 4 (6,5%), pulmonary embolism - 3 (4,8%), stroke - 1 (1,6%) cases. Long-term survival indicators were evaluated among 53 patients. The median follow-up was 36,9±13,3 months. The cumulative 2-, 5-, and 10-year survival rates were 53,5%; 38,2% and 17,2%, in 32 patients without metastases - 58,7%; 43,1% and 18,5% respectively. There was no significant difference іin survival among patients with atrial and retrohepatic venous tumor thrombosis versus infrahepatic and cavarenal venous tumor thrombosis (p>0,05). Conclusion. The accurate preoperative assessment of the level of neoprocess involvement, improvement of surgical tactics, effective prevention of thromboembolic and hemorrhagic complications make it possible to provide acceptable survival rates for patients with renal cell carcinoma, complicated by cavoatrial tumor thrombosis. What this paper adds The role of intraoperative blood reinfusion in the aspect of oncological safety in patients with renal cell carcinoma, complicated by invasion of inferior vena cava and right atrium, was first determined. Based on the results of cytological examination of tumor contamination of blood sediment material from the operating field during the cavatomy and washed autoerythrocytes it has been established that intraoperative reinfusion can provide necessary ablastics and doesn’t pose an additional risk of tumor dissemination during radical nephrectomy and inferior vena cava thrombectomy. The use of combined mini-invasive approaches in the surgical treatment of supradiaphragmatic level of intracaval invasion due to renal cell carcinoma is proposed, which will reduce the volume, trauma and duration of surgery, as well as provide reliable pulmonary embolism prevention. For the first time in Ukraine the immediate and long-term results of surgical treatment of patients with renal cell carcinoma, complicated by invasion of inferior vena cava and right atrium, during the last three decades were analyzed.