{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T23:43:15Z","timestamp":1777506195981,"version":"3.51.4"},"reference-count":22,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2019,5,13]],"date-time":"2019-05-13T00:00:00Z","timestamp":1557705600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Acta Radiol"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Indications for computed tomography (CT) in preoperative patients with thyroid cancer are still controversial.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To determine the value of CT and ultrasonography (US) in preoperative lymph node assessment of patients with papillary thyroid carcinoma (PTC) according to primary tumor size.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and Methods<\/jats:title>\n                    <jats:p>A total 453 patients with surgically proven PTC who underwent US and CT for preoperative evaluation in 2010 at our tertiary referral center were included. The diagnostic sensitivity, specificity, and accuracy of US, CT, and the combination of US and CT (US\/CT) in the preoperative nodal assessment were compared. We performed subgroup analysis to compare the findings according to primary tumor size.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>In overall tumors, adding CT to US had greater sensitivity, lower specificity, and greater accuracy in predicting central lymph node metastasis (LNM) but lower accuracy in prediction of lateral LNM. In smaller cancers (\u22641 cm), US alone had greater specificity and accuracy than CT alone or US\/CT in predicting lateral LNM. In larger cancers (&gt;1 cm), CT had greater sensitivity and accuracy than US in predicting central LNM, while US had greater specificity and accuracy than CT in predicting lateral LNM. There were no patients with smaller tumors who showed retropharyngeal and superior mediastinal LNM diagnosed by CT alone.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>CT is superior to US for detecting central LNM in preoperative patients with PTCs\u2009&gt;\u20091 cm. However, there are no benefits to adding CT to US to predict lateral LNM in small cancers (\u22641 cm).<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0284185119847677","type":"journal-article","created":{"date-parts":[[2019,5,14]],"date-time":"2019-05-14T02:33:51Z","timestamp":1557801231000},"page":"21-27","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":16,"title":["Comparison of ultrasonography and CT for preoperative nodal assessment of patients with papillary thyroid cancer: diagnostic performance according to primary tumor size"],"prefix":"10.1177","volume":"61","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6044-9235","authenticated-orcid":false,"given":"So Yeon","family":"Yang","sequence":"first","affiliation":[{"name":"Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jung Hee","family":"Shin","sequence":"additional","affiliation":[{"name":"Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Soo Yeon","family":"Hahn","sequence":"additional","affiliation":[{"name":"Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yaeji","family":"Lim","sequence":"additional","affiliation":[{"name":"Department of Applied Statistics, Chung-Ang University, Seoul, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seok Young","family":"Hwang","sequence":"additional","affiliation":[{"name":"Department of Applied Statistics, Chung-Ang University, Seoul, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tae Hyuk","family":"Kim","sequence":"additional","affiliation":[{"name":"Division of Endocrinology and Metabolism, Department of Medicine, Thyroid Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jee Soo","family":"Kim","sequence":"additional","affiliation":[{"name":"Division of Breast and Endocrine Surgery, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of 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