Cardenilimab Combined With Lenvatinib in Patients With Perioperative Resectable Clear Cell Renal Cell Carcinoma.

Preoperative: Cardenilimab: 10 mg/kg qd intravenously, one cycle every 21 days, administered on the first day of each cycle, a total of 4 cycles. Lenvatinib: Weight \<60kg, 8mg, once a day, orally, for 4 cycles Weight \>60kg, 12mg, once a day, orally, for a total of 4 cycles Surgery: The patient is receiving 4 cycles of cardenilimab + Standard radical nephrectomy was performed within 30-40 days after the end of lenvatinib treatment. Postoperative: Cardenilimab: 10 mg/kg qd intravenously, 1 cycle every 21 days, administered on the 1st day of each cycle, a total of 8 cycles Lenvatinib: body weight \<60 kg, 8 mg, once a day, orally , a total of 8 cycles, weight \> 60kg, 12mg, once a day, orally, a total of 8 cycles.