Clinical case of long-term surgical treatment of a patient with progression of renal cell carcinoma

Renal cell carcinoma is one of the most common malignant neoplasms of the genitourinary system. Disease progression occurs in 30% of patients after radical surgical treatment. Disease progression with metastatic spread to the contralateral kidney is quite rare (in 1–2% of cases). In such cases, differential diagnostics of disease progression with primary multiple malignant neoplasms of the kidneys is relevant. This is necessary to determine the correct treatment for patients.