51. Pathological complete responders after chemoradiotherapy for locally advanced rectal cancer: What can be learned from MRI and endoscopy for the selection of complete responders?. Issue 9 (September 2016) - Van der Sande, M.; Maas, M.; Hupkens, B.; Martens, M.; Lambregts, D.; Beets-Tan, R.; Breukink, S.; Beets, G.