{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T07:34:20Z","timestamp":1792481660006,"version":"4.5.0"},"reference-count":31,"publisher":"Oxford University Press (OUP)","issue":"10","license":[{"start":{"date-parts":[[2020,5,26]],"date-time":"2020-05-26T00:00:00Z","timestamp":1590451200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"DOI":"10.13039\/501100004917","name":"Doosan Yonkang Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004917","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,8,24]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>In gallbladder cancer, stage T2 is subdivided by tumour location into lesions on the peritoneal side (T2a) or hepatic side (T2b). For tumours on the peritoneal side (T2a), it has been suggested that liver resection may be omitted without compromising the prognosis. However, data to validate this argument are lacking. This study aimed to investigate the prognostic value of tumour location in T2 gallbladder cancer, and to clarify the adequate extent of surgical resection.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Clinical data from patients who underwent surgery for gallbladder cancer were collected from 14 hospitals in Korea, Japan, Chile and the USA. Survival and risk factor analyses were conducted.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>Data from 937 patients were available for evaluation. The overall 5-year disease-free survival rate was 70\u00b76 per cent, 74\u00b75 per cent for those with T2a and 65\u00b75 per cent among those with T2b tumours (P =\u00a00\u00b7028). Regarding liver resection, extended cholecystectomy was associated with a better 5-year disease-free survival rate than simple cholecystectomy (73\u00b70 versus 61\u00b75 per cent; P =\u00a00\u00b7012). The 5-year disease-free survival rate was marginally better for extended than simple cholecystectomy in both T2a (76\u00b75 versus 66\u00b71 per cent; P =\u00a00\u00b7094) and T2b (68\u00b72 versus 56\u00b72 per cent; P =\u00a00\u00b7084) disease. Five-year disease-free survival rates were similar for extended cholecystectomies including liver wedge resection versus segment IVb\/V segmentectomy (74\u00b71 versus 71\u00b75 per cent; P =\u00a00\u00b7720). In multivariable analysis, independent risk factors for recurrence were presence of symptoms (hazard ratio (HR) 1\u00b752; P =\u00a00\u00b7002), R1 resection (HR 1\u00b796; P =\u00a00\u00b7004) and N1\/N2 status (N1: HR 3\u00b740, P &amp;lt; 0\u00b7001; N2: HR 9\u00b756, P &amp;lt; 0\u00b7001). Among recurrences, 70\u00b78 per cent were metastatic.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>Tumour location was not an independent prognostic factor in T2 gallbladder cancer. Extended cholecystectomy was marginally superior to simple cholecystectomy. A radical operation should include liver resection and adequate node dissection.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1002\/bjs.11618","type":"journal-article","created":{"date-parts":[[2020,5,26]],"date-time":"2020-05-26T11:48:42Z","timestamp":1590493722000},"page":"1334-1343","source":"Crossref","is-referenced-by-count":63,"title":["Role of tumour location and surgical extent on prognosis in T2 gallbladder cancer: an international multicentre study"],"prefix":"10.1093","volume":"107","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4827-7805","authenticated-orcid":false,"given":"W","family":"Kwon","sequence":"first","affiliation":[{"name":"Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine , Seoul, South 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G","family":"Kim","sequence":"additional","affiliation":[{"name":"School of Medicine, Kyungpook National University , Daegu, South Korea"},{"name":"Kyungpook National University Chilgok Hospital , Daegu, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H J","family":"Kwon","sequence":"additional","affiliation":[{"name":"School of Medicine, Kyungpook National University , Daegu, South Korea"},{"name":"Kyungpook National University Chilgok Hospital , Daegu, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E","family":"Vinuela","sequence":"additional","affiliation":[{"name":"Department of Digestive Surgery , Santiago, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N","family":"J\u00e1rufe","sequence":"additional","affiliation":[{"name":"Department of Digestive Surgery , Santiago, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J C","family":"Roa","sequence":"additional","affiliation":[{"name":"Pathology, Faculty of Medicine, Catholic University of Chile , Santiago, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7093-2469","authenticated-orcid":false,"given":"I W","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Surgery, Samsung Medical Centre, Sungkyunkwan University College of Medicine , Seoul, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J S","family":"Heo","sequence":"additional","affiliation":[{"name":"Department of Surgery, Samsung Medical Centre, Sungkyunkwan University College of Medicine , Seoul, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S-H","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Surgery, Samsung Medical Centre, Sungkyunkwan University College of Medicine , Seoul, South 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Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H M","family":"Losada","sequence":"additional","affiliation":[{"name":"Department of Surgery, Universidad de la Frontera , Temuco, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S-S","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Surgery, Centre for Liver Cancer, National Cancer Centre , Goyang, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S-J","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Surgery, Centre for Liver Cancer, National Cancer Centre , Goyang, South Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S-W","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Surgery, Centre for Liver Cancer, National Cancer Centre , Goyang, South 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