Cough to lungs. Surgery or radiotherapy?

Diagnosed with rectal cancer T3N1MO, postoperative chemotherapy (dexamethasone phenyphoside 0.008G / 2Ml, Ferrum 0.325G, Ondanesetron 0.008g / 4ml), radiotherapy (59.4 Gy in 28 fractions on the rectal tumor and 45 Gy in 25 fractions per and anterior resection surgery of February 2016. In postoperative thyroid disease, total tumor remission after preoperative treatment was f