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Abstract #2816

MRI-Based Wait-And-See Policy in Clinical Complete Responders to Chemoradiation in Rectal Cancer: A Promising Alternative

Monique Maas1, Doenja Lambregts1, Ronald van Dam2, Patty Nelemans3, Guido Lammering4, Rob Jansen5, Regina Beets-Tan1, Geerard Beets2

1Radiology, Maastricht University Medical Center, Maastricht, Limburg, Netherlands; 2Surgery, Maastricht University Medical Center, Maastricht, Limburg, Netherlands; 3Epidemiology, Maastricht University Medical Center, Maastricht, Limburg, Netherlands; 4Radiotherapy, Maastricht University Medical Center, Maastricht, Limburg, Netherlands; 5Medical Oncology, Maastricht University Medical Center, Maastricht, Limburg, Netherlands


When - after neoadjuvant chemoradiation for rectal cancer - imaging could accurately select the complete responders, surgery might safely be omitted and patients can undergo a wait-and-see policy. This study aims to evaluate whether MRI at 1.5T is accurate enough to select patients for wait-and-see and can safely be used as a follow-up tool.