Comparison of clinicopathological characteristics between resected ampullary carcinoma and carcinoma of the second portion of the duodenum
Kohei Nishio, Kenjiro Kimura, Go Ohira, Hiroji Shinkawa, Ryosuke Amano, Shogo Tanaka, Shigekazu Takemura, Shoji Kubo, Takeaki Ishizawa, Department of Hepato-Biliary-Pancreatic Surgery, Osaka Metropolitan University, Osaka 5458585, Japan
Akihiro Murata, Shintaro Kodai, Sadatoshi Shimizu, Akishige Kanazawa, Department of Hepato-Biliary-Pancreatic Surgery, Osaka City General Hospital, Osaka 5340021, Japan
Author contributions: Nishio K designed the study and wrote the draft of the article. Kimura K and Kubo S contributed to interpretation of the data and the critical revision of the article content. All the other authors (Murata A, Ohira G, Shinkawa H, Kodai S, Amano R, Takemura S, Shimizu S, Kanazawa A and Ishizawa A) contributed to the data collection and interpretation and critically reviewed the article; All the authors have read and agreed to the article.
Institutional review board statement: This study was approved by the Ethics Committees of Osaka City University (approval No. 2020-198) and Osaka City General Hospital (approval No. 1910076) and was performed in compliance with the Declaration of Helsinki.
Informed consent statement: All patients provided informed consent for using their data in this study according to the institutional regulations of the study sites.
Conflict-of-interest statement: All authors declare that they have no competing interests related to the manuscript.
Data sharing statement: No additional data are available.
STROBE statement: The authors have read the STROBE Statement – checklist of items, and the manuscript was prepared and revised according to the STROBE Statement – checklist of items.
: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Kenjiro Kimura, Doctor, MD, PhD, Doctor, Department of Hepato-Biliary-Pancreatic Surgery, Osaka Metropolitan University, 1-4-3 Asahimachi, Abeno-ku, Osaka 5458585, Japan. email@example.com
Received: July 22, 2022
Peer-review started: July 22, 2022
First decision: September 26, 2022
Revised: October 10, 2022
Accepted: October 19, 2022
Article in press: October 19, 2022
Published online: November 27, 2022