Fig. 1From: Postoperative circulating tumor DNA as markers of recurrence risk in stages II to III colorectal cancerFlowchart depicting the patient enrollment, sample collections and evaluable population. ACT, adjuvant chemotherapy; CEA, carcinoembryonic antigen; CRC, colorectal cancer; CT, computed tomography; ctDNA, circulating tumor DNA; pre-op, pre-operation; post-op, postoperationBack to article page