Visible common bile duct at the duodenum due to the destructive effect of the tumor - ÖZTAŞ, Erkin; PARLAK, Erkan; SAYILIR, Abdurrahim; DAĞLI, Ülkü; ARHAN, Mehmet; ETİK, Diğdem and ÜLKER, Aysel (Turkish Journal of Gastroenterology, 2011)