Adenocarcinoma of the cervical esophagus arising within a long segment of Barrett’s metaplasia - Januszewicz, Wladyslaw; Trzebinski, Krzysztof; Lenarcik, Malgorzata; Cencelewicz-Lesikow, Anna; Kaminski, Michal F.; Regula, Jaroslaw (Endoscopy, 2020)