{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T04:35:47Z","timestamp":1777437347959,"version":"3.51.4"},"reference-count":0,"publisher":"AVES YAYINCILIK A.\u015e.","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Turkish Journal of Gastroenterology"],"abstract":"<jats:p>Abstract Background\/Aims: We sought to investigate the roles of maximum standardized uptake value (SUVmax) and serum carbohydrate antigen 19-9 (CA 19-9) in predicting the histopathological features of periampullary tumors. Materials and Methods: Thirty-four patients with histologically confirmed periampullary tumors were classified into two groups, according to the localizations of their tumors (ampulla Vateri or pancreas). SUVmax was obtained from [(18)F]-fluorodeoxyglucose positron emission tomography computed tomography (18F-FDG PET\/CT). SUVmax and CA 19-9 levels were measured and compared with histopathological features of the tumors. Logistic regression was used to assess the significance and independence of predictive factors. Results: 18F-FDG PET\/CT SUVmax (&amp;lt;2.5 vs. &amp;ge;2.5; p=0.031) and CA 19-9 level (normal vs. elevated; p=0.045) were significantly and independently predictive of the histopathological origin of the tumors (ampulla Vateri vs. pancreas). The ratio of CA 19-9 levels and SUVmax were found to be higher in cases of poorly differentiated tumors and tumors greater than 2 cm in diameter. Conclusion: A surgical approach to treatment may be considered for patients who have both i) an established or suspected diagnosis of periampullary tumors and ii) low SUVmax and CA 19-9 levels.<\/jats:p>","DOI":"10.5152\/tjg.2015.7870","type":"journal-article","created":{"date-parts":[[2015,3,13]],"date-time":"2015-03-13T11:26:25Z","timestamp":1426245985000},"page":"170-175","source":"Crossref","is-referenced-by-count":4,"title":["18F-FDG activitiy PET\/CT and CA-19.9 levels for the prediction of histopathological features and localization of peri- ampullary tumors"],"prefix":"10.5152","volume":"26","author":[{"given":"Atilgan Tolga","family":"Akcam","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abdullah","family":"\u00dclk\u00fc","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ahmet","family":"Rencuzo\u011fullar\u0131","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cem Kaan","family":"Parsak","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zeynep","family":"Yapar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Figen","family":"Doran","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haluk","family":"Demiry\u00fcrek","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexis Kofi","family":"Okoh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"3111","published-online":{"date-parts":[[2015,3,15]]},"container-title":["Turkish Journal of Gastroenterology"],"original-title":[],"link":[{"URL":"https:\/\/www.turkjgastroenterol.org\/index.php\/tjg\/article\/download\/2713\/2395","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T12:01:49Z","timestamp":1777377709000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.turkjgastroenterol.org\/index.php\/tjg\/article\/view\/2713"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,3,15]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2015,3,15]]}},"URL":"https:\/\/doi.org\/10.5152\/tjg.2015.7870","relation":{},"ISSN":["2148-5607"],"issn-type":[{"value":"2148-5607","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,3,15]]}}}