Tislelizumab Combined With Chemotherapy (CAPOX) in the Perioperative Treatment of MSI-H/dMMR Stage II or III Colorectal Cancer

"Neoadjuvant treatment options:~Tislelizumab 200mg, intravenous infusion, D1, Q3W, a total of 4 cycles; Oxaliplatin 130mg/m2, intravenous infusion, D1, Q3W, 4 cycles in total; Capecitabine 1000mg/m2, orally twice in the morning and evening, D1-14, Q3W, 4 cycles in total;~Adjuvant treatment options:~Tislelizumab 200mg, intravenous infusion, Q3W;~± Chemotherapy method (researcher judges whether to add chemotherapy according to the comprehensive condition of the patient); Until disease progression or unacceptable toxicity, the maximum treatment time is 12 months."