{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T13:12:44Z","timestamp":1769087564154,"version":"3.49.0"},"reference-count":11,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T00:00:00Z","timestamp":1768867200000},"content-version":"vor","delay-in-days":27,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,12,24]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Collision tumors of the thyroid gland are defined by the coexistence of two or more histologically and morphologically distinct neoplasms, separated by normal thyroid tissue. This phenomenon is rare, with the most frequently reported combination being the coexistence of medullary carcinoma and papillary carcinoma. This case reports a 73-year-old female patient with an asymptomatic thyroid nodule. Ultrasonographic examination revealed a solid, isoechoic, well-defined nodule with a halo and peripheral vascularization, measuring 4.3\u2009\u00d7\u20092.5\u00a0cm in the left lobe. Fine-needle aspiration cytology classified the nodule as Bethesda IV (follicular tumor). Following total thyroidectomy, histopathological analysis identified papillary carcinoma in the isthmus and minimally invasive follicular carcinoma in the left lobe.<\/jats:p>","DOI":"10.1093\/jscr\/rjaf1106","type":"journal-article","created":{"date-parts":[[2026,1,4]],"date-time":"2026-01-04T12:27:08Z","timestamp":1767529628000},"source":"Crossref","is-referenced-by-count":0,"title":["Collision thyroid tumors: a case report of coexisting papillary and follicular carcinoma"],"prefix":"10.1093","volume":"2026","author":[{"given":"Danilo Estuardo","family":"Torselli-Valladares","sequence":"first","affiliation":[{"name":"Universidad Francisco Marroquin, Faculty of Medicine , 6 avenue 7-55 zona 10, Guatemala 01010 ,","place":["Guatemala"]},{"name":"Hospital General San Juan de Dios , 1A calle 10-50 zona 1, Guatemala 01010 ,","place":["Guatemala"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"V\u00edctor","family":"Argueta","sequence":"additional","affiliation":[{"name":"Hospital General San Juan de Dios , 1A calle 10-50 zona 1, Guatemala 01010 ,","place":["Guatemala"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos Rene","family":"Cord\u00f3n","sequence":"additional","affiliation":[{"name":"Universidad Francisco Marroquin, Faculty of Medicine , 6 avenue 7-55 zona 10, Guatemala 01010 ,","place":["Guatemala"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marco Antonio","family":"Pe\u00f1alonzo","sequence":"additional","affiliation":[{"name":"Universidad Francisco Marroquin, Faculty of Medicine , 6 avenue 7-55 zona 10, Guatemala 01010 ,","place":["Guatemala"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2026,1,20]]},"reference":[{"key":"2026012010270078200_ref1","doi-asserted-by":"publisher","first-page":"84","DOI":"10.22551\/2021.33.0804.10191","article-title":"Collision tumors of the thyroid: a special clinical and pathological entity","volume":"8","author":"Bojoga","year":"2021","journal-title":"Arch Clin Cases"},{"key":"2026012010270078200_ref2","doi-asserted-by":"crossref","first-page":"182","DOI":"10.1007\/s12070-011-0450-0","article-title":"Follicular and papillary carcinoma: a thyroid collision tumor","volume":"65","author":"Plauche","year":"2013","journal-title":"Indian J Otolaryngol Head Neck Surg"},{"key":"2026012010270078200_ref3","doi-asserted-by":"publisher","first-page":"582374","DOI":"10.5402\/2011\/582374","article-title":"Collision tumor of the thyroid gland: primary squamous cell and papillary thyroid carcinoma","volume":"2011","author":"Warman","year":"2011","journal-title":"ISRN Otolaryngol"},{"key":"2026012010270078200_ref4","article-title":"Phenotypic appraisal of collision tumors of thyroid\u2014initial experience of a rare entity at a cancer Centre in South India","volume":"7","author":"James","year":"2022","journal-title":"Asian Pac J Cancer Care"},{"key":"2026012010270078200_ref5","article-title":"Tumors colliding in thyroid: a case report","volume":"9","author":"Shinde","year":"2022","journal-title":"Indian J Pathol Oncol"},{"key":"2026012010270078200_ref6","article-title":"Collision thyroid tumors among patients diagnosed with thyroid carcinomas","volume":"41","author":"Mintziori","year":"2016","journal-title":"Endocrine Abstracts"},{"key":"2026012010270078200_ref7","first-page":"163","article-title":"Collision tumour of thyroid gland comprising of papillary carcinoma and medullary carcinoma: a rare presentation","volume":"13","author":"Sekar","year":"2014","journal-title":"Int J Recent Trends Sci Technol"},{"key":"2026012010270078200_ref8","article-title":"An approach to a rare case of collision tumor of follicular and papillary carcinomas of the thyroid","volume":"12","author":"Gosavi","year":"2020","journal-title":"Otorhinolaryngol Clin"},{"key":"2026012010270078200_ref9","doi-asserted-by":"publisher","first-page":"1137","DOI":"10.1007\/s12105-021-01323-7","article-title":"Papillary and medullary thyroid carcinomas presenting as collision tumors: a case series of 21 cases at a tertiary care cancer center","volume":"15","author":"Thomas","year":"2021","journal-title":"Head Neck Pathol"},{"key":"2026012010270078200_ref10","doi-asserted-by":"crossref","DOI":"10.2169\/internalmedicine.37.955","article-title":"Mixed medullary-follicular carcinoma and papillary carcinoma of the same thyroid","volume":"37","author":"Wu","year":"1998","journal-title":"Intern Med"},{"key":"2026012010270078200_ref11","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1677\/erc.1.00901","article-title":"Medullary and papillary carcinoma of the thyroid gland occurring as a collision tumour: report of three cases with molecular analysis and review of the literature","volume":"12","author":"Rossi","year":"2005","journal-title":"Endocr Relat Cancer"}],"container-title":["Journal of Surgical Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/jscr\/article-pdf\/2026\/1\/rjaf1106\/66475334\/rjaf1106.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/jscr\/article-pdf\/2026\/1\/rjaf1106\/66475334\/rjaf1106.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T15:27:15Z","timestamp":1768922835000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/jscr\/article\/doi\/10.1093\/jscr\/rjaf1106\/8431474"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12,24]]},"references-count":11,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2025,12,24]]}},"URL":"https:\/\/doi.org\/10.1093\/jscr\/rjaf1106","relation":{},"ISSN":["2042-8812"],"issn-type":[{"value":"2042-8812","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2026,1]]},"published":{"date-parts":[[2025,12,24]]},"article-number":"rjaf1106"}}