{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T08:44:49Z","timestamp":1773823489557,"version":"3.50.1"},"reference-count":20,"publisher":"Elsevier BV","issue":"6","license":[{"start":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T00:00:00Z","timestamp":1638316800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T00:00:00Z","timestamp":1638316800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Hepatobiliary &amp; Pancreatic Diseases International"],"published-print":{"date-parts":[[2021,12]]},"DOI":"10.1016\/j.hbpd.2021.07.009","type":"journal-article","created":{"date-parts":[[2021,8,10]],"date-time":"2021-08-10T13:15:08Z","timestamp":1628601308000},"page":"568-573","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":6,"title":["Proposal of a new T-stage classification system for ampullary carcinoma based on Surveillance, Epidemiology and End Result (SEER) database"],"prefix":"10.1016","volume":"20","author":[{"given":"Shi-Jie","family":"Wang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yi-Fei","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shan","family":"Liao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"You-Zhu","family":"Wei","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yan-Ming","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.hbpd.2021.07.009_bib0001","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1016\/j.suc.2018.12.001","article-title":"Ampullary cancer","volume":"99","author":"Zheng-Pywell","year":"2019","journal-title":"Surg Clin North Am"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0002","doi-asserted-by":"crossref","first-page":"436","DOI":"10.1016\/j.ijrobp.2008.11.067","article-title":"Role of adjuvant chemoradiotherapy for ampulla of Vater cancer","volume":"75","author":"Kim","year":"2009","journal-title":"Int J Radiat Oncol Biol Phys"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0003","doi-asserted-by":"crossref","first-page":"1686","DOI":"10.1002\/bjs.1800821233","article-title":"Prognostic factors after resection of ampullary carcinoma: multivariate survival analysis in comparison with ductal cancer of the pancreatic head","volume":"82","author":"Klempnauer","year":"1995","journal-title":"Br J Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0004","doi-asserted-by":"crossref","first-page":"423","DOI":"10.1007\/s00534-007-1313-7","article-title":"Tumor-related factors and patient's age influence survival after resection for ampullary adenocarcinoma","volume":"15","author":"Barauskas","year":"2008","journal-title":"J Hepatobiliary Pancreat Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0005","doi-asserted-by":"crossref","first-page":"991","DOI":"10.1245\/s10434-009-0883-9","article-title":"Predictors of survival in periampullary cancers following pancreaticoduodenectomy","volume":"17","author":"Hatzaras","year":"2010","journal-title":"Ann Surg Oncol"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0006","series-title":"AJCC cancer staging manual","author":"Amin","year":"2017"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0007","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1002\/jcu.20523","article-title":"Reappraisal of endosonography of ampullary tumors: correlation with transabdominal sonography, CT, and MRI","volume":"37","author":"Chen","year":"2009","journal-title":"J Clin Ultrasound"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0008","doi-asserted-by":"crossref","first-page":"142","DOI":"10.1097\/SLA.0000000000001837","article-title":"Does size matter in pancreatic cancer? Reappraisal of tumour dimension as a predictor of outcome beyond the TNM","volume":"266","author":"Marchegiani","year":"2017","journal-title":"Ann Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0009","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1097\/SLA.0000000000001763","article-title":"Multi-institutional validation study of the American Joint Commission on Cancer (8th Edition) changes for T and N staging in patients with pancreatic adenocarcinoma","volume":"265","author":"Allen","year":"2017","journal-title":"Ann Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0010","unstructured":"Surveillance, Epidemiology, and End Results (SEER) Program (2019) Overview of the SEER program. Accessed 21 Oct. 2019. Available from: https:\/\/seer.cancer.gov\/"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0011","doi-asserted-by":"crossref","first-page":"793","DOI":"10.1016\/j.hpb.2016.07.009","article-title":"Proposal for a new T-stage classification system for distal cholangiocarcinoma: a 10-institution study from the U.S. Extrahepatic Biliary Malignancy Consortium","volume":"18","author":"Postlewait","year":"2016","journal-title":"HPB (Oxford)"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0012","doi-asserted-by":"crossref","first-page":"358","DOI":"10.1007\/BF01262815","article-title":"Prognostically relevant factors in cancer of Vater's ampulla","volume":"374","author":"B\u00f6ttger","year":"1989","journal-title":"Langenbecks Arch Chir"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0013","doi-asserted-by":"crossref","first-page":"4392","DOI":"10.1245\/s10434-015-4499-y","article-title":"Substaging nodal status in ampullary carcinomas has significant prognostic value: proposed revised staging based on an analysis of 313 well-characterized cases","volume":"22","author":"Balci","year":"2015","journal-title":"Ann Surg Oncol"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0014","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1186\/s12893-015-0019-z","article-title":"Long-term prognosis of surgical treatment for early ampullary cancers and implications for local ampullectomy","volume":"15","author":"Song","year":"2015","journal-title":"BMC Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0015","doi-asserted-by":"crossref","first-page":"513","DOI":"10.1007\/s00268-004-7498-x","article-title":"Pancreatoduodenectomy for tumors of Vater's ampulla: report on 94 consecutive patients","volume":"29","author":"Di Giorgio","year":"2005","journal-title":"World J Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0016","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1007\/s00268-006-0213-3","article-title":"Carcinoma of the ampulla of Vater: factors influencing long-term survival of 127 patients with resection","volume":"31","author":"Qiao","year":"2007","journal-title":"World J Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0017","doi-asserted-by":"crossref","first-page":"379","DOI":"10.1007\/PL00012257","article-title":"Clinicopathologic study for the assessment of resection for ampullary carcinoma","volume":"21","author":"B\u00f6ttger","year":"1997","journal-title":"World J Surg"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0018","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1002\/jso.21283","article-title":"Lymph node involvement in ampullary cancer: the importance of the number, ratio, and location of metastatic nodes","volume":"100","author":"Sierzega","year":"2009","journal-title":"J Surg Oncol"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0019","doi-asserted-by":"crossref","first-page":"1071","DOI":"10.1016\/j.surg.2017.12.018","article-title":"Validation of the eighth edition of the American Joint Committee on Cancer staging system for ampulla of Vater cancer","volume":"163","author":"Kim","year":"2018","journal-title":"Surgery"},{"key":"10.1016\/j.hbpd.2021.07.009_bib0020","doi-asserted-by":"crossref","first-page":"677","DOI":"10.1016\/j.ejso.2018.02.008","article-title":"Prognostic factors and benefits of adjuvant therapy after pancreatoduodenectomy for ampullary adenocarcinoma: Mayo Clinic experience","volume":"44","author":"Jin","year":"2018","journal-title":"Eur J Surg Oncol"}],"container-title":["Hepatobiliary &amp; Pancreatic Diseases International"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1499387221001533?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1499387221001533?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T15:42:04Z","timestamp":1761493324000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S1499387221001533"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,12]]},"references-count":20,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["S1499387221001533"],"URL":"https:\/\/doi.org\/10.1016\/j.hbpd.2021.07.009","relation":{},"ISSN":["1499-3872"],"issn-type":[{"value":"1499-3872","type":"print"}],"subject":[],"published":{"date-parts":[[2021,12]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Proposal of a new T-stage classification system for ampullary carcinoma based on Surveillance, Epidemiology and End Result (SEER) database","name":"articletitle","label":"Article Title"},{"value":"Hepatobiliary & Pancreatic Diseases International","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.hbpd.2021.07.009","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2019 First Affiliated Hospital, Zhejiang University School of Medicine in China. Published by Elsevier B.V. All rights reserved.","name":"copyright","label":"Copyright"}]}}