ACTIVE SURVEILLANCE PROGRAM OF PATIENTS WITH RECTAL CANCER WITH A COMPLETE CLINICAL RESPONSE AFTER PROLONGED CHEMORADIOTHERAPY WITH CONSOLIDATING CHEMOTHERAPY СтатьяNevol'skikh A.A., Avdeenko Violetta A., Berezovskaya Tatyana P., Pochuev Taras P., Daineko Yana A., Myalina Sofia Anatolyevna, Sinyaev Petr V., Ivanov Sergey A., Kaprin Andrey D.Koloproktologia. Том 24. 2025. С. 137-148