PO-1115: What's the role of tumor regression grade (TRG) in rectal cancer: an istututional experience. (November 2020) - Guaineri, A.; Triggiani, L.; Frassine, F.; Imbrescia, J.; Barbera, F.; Vitali, P.; Terraneo, F.; Pegurri, L.; Ranghetti, E.; Taddeo, A.; Magrini, S.M.; Buglione, M.