ecrin-mdr-crcClinical2019colorectal tumor, duodenal epithelial tumorColorectal Tumor, Duodenal Epithelial TumorObservationalhttps://newmdr.ecrin.org/Study/2653623Japan12ECRIN MDRActive, not recruitingfalseThe study for prevalence of colorectal tumor among duodenal tumor patientsPrimary outcome(s): The colorectal adenoma detection rate (ADR) in patients with duodenal epithelial neoplasia and with medical checkup2019-12-152653623JPRN-UMIN000038749