A 58-year-old patient complains of general weakness, weight loss up to 10 kg within the last 1,5 months, progressive pain in the small of the back, raise of blood pressure to 220/160 mm Hg, subfebrile body temperature. Objectively: tuberous slightly movable lump can be palpated in the right subcostal area; veins of spermatic cord and scrotum are dilated. Blood test: Hb - 86 g/l, ESR - 44 mm/h. Urine test results: specific gravity - 1020, protein - 0,99 g/l, RBCs - cover the whole field of vision, WBCs - 4-6 in the field of vision. What is the provisional diagnosis?