title: Duodenal obstruction due to annular pancreas associated with carcinoma of the duodenum.
authors.affiliation: Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland.
authors.forename: Jerzy
authors.initials: J
authors.lastname: Mielko
authors.affiliation: Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Kurylcio
authors.affiliation: Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Skórzewska
authors.affiliation: Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland.
authors.forename: Bogumiła
authors.initials: B
authors.lastname: Ciseł
authors.affiliation: Student Research Group, Medical University of Lublin, Lublin, Poland.
authors.forename: Beata
authors.initials: B
authors.lastname: Polkowska
authors.affiliation: Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland.
authors.forename: Karol
authors.initials: K
authors.lastname: Rawicz-Pruszyński
authors.affiliation: Department of Pathology, University Hospital No. 1, Lublin, Poland.
authors.forename: Jadwiga
authors.initials: J
authors.lastname: Sierocińska-Sawa
authors.affiliation: Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland.
authors.forename: Wojciech P
authors.initials: WP
authors.lastname: Polkowski