This article presents a systematic literature review to assess the survival outcomes of patients with bilateral renal cell carcinoma who underwent nephro-preserving surgery. Patients with bilateral renal neoplastic lesions represent a rare subpopulation, numbering, according to different authors, from 2 to 6 % of the total RCC group. Despite the increase in the number of cases of bilateral RCC, the number of works devoted to the study of the features of surgical intervention, prognosis factors, treatment outcomes and survival of this cohort of patients is limited, and a number of important questions regarding this problem remain unresolved. Currently, the only effective method of treating bilateral renal cancer is nephro-preserving surgery in the volume of bilateral renal resection / nephrectomy with resection of the contralateral kidney in case of synchronous lesion or resection of a single kidney in case of metachronous lesion. This strategy avoids or reduces the risk of developing renal failure and its consequences after surgery. Conclusion. Nephro-preserving surgery for bilateral renal cell carcinoma is the only effective method to achieve satisfactory oncological results with a low incidence of complications.

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Among malignant neoplasms, kidney cancer occupies one of the first places in terms of the growth rate of incidence in Russia. Despite the possibilities of modern diagnostic research methods, the number of patients with common forms of the disease does not decrease. In 5–10% of cases, renal cell carcinoma is complicated by the formation of a tumor clot in the inferior Vena cava (VCI), which requires volume surgery — nephrectomy with thrombectomy, which is the only effective treatment option for this group of patients. Previously, the results of treatment of locally advanced kidney cancer were unsatisfactory due to the high incidence of complications and mortality after extended surgical interventions. However, improving the operation technique requires a re-evaluation of previous representations. Performing a nephrectomy with a VCI thrombectomy is not an easy task and is often associated not only with technical difficulties due to the need for mobilization, control and resection of the inferior Vena cava, but also with the risk of intra — and postoperative complications. The most difficult task is the choice of surgical tactics for descending non-tumor hemorrhagic thrombosis. As a result of long-term tumor obstruction, organized blood clots that are soldered to the intima of the vessel often spread to the common iliac veins and, as a rule, are technically impossible to remove. If the VCI is preserved, a residual hemorrhagic blood clot in the area of its confluence is a potential source of pulmonary embolism (PE), for the prevention of which mechanical plication is used. This maneuver does not lead to the development of clinically significant chronic venous insufficiency of the lower extremities (CVI NC), postoperative VCI or PE thrombosis. Despite the technical complexity of the operation and the difficult course of the postoperative period, surgical treatment of renal cell cancer complicated by tumor thrombosis is certainly justified. This article presents a clinical case of surgical treatment of a patient with renal cell cancer complicated by massive specific (tumor) and non-specific thrombosis in the presence of reduced parenchymalexcretory function of the contralateral kidney and severe cardiac pathology. Goal: to share experience and demonstrate the results of successful surgical treatment of renal cell carcinoma.

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