[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-373657-105":59,"doc-detail-373657-en":131},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":124,"head_meta":126,"extra_data":128,"updated_unix":130},105,"en","collision-tumor-of-thyroid-a-case-report-of-synchronous-papillary-and-follicular-thyroid-carcinoma","Collision tumor of thyroid - A case report of synchronous papillary and follicular thyroid carcinoma","","Rationale: Collision tumors involving differentiated thyroid carcinomas are exceedingly rare, despite thyroid cancer being common overall. Patient concerns: A 65-year-old man was incidentally diagnosed with thyroid cancer during staging workup for gastric cancer. Diagnoses: Two coincident left-lobe cancers were identified—papillary carcinoma (pT1bN1a) and follicular carcinoma (pT2N0). Interventions included total thyroidectomy with central lymph node dissection, followed by hormone suppression and radioactive iodine therapy. Outcomes showed no complications or recurrence to date, and further studies are needed to guide management.",{"@graph":69,"@context":123},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/collision-tumor-of-thyroid-a-case-report-of-synchronous-papillary-and-follicular-thyroid-carcinoma/373657/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/collision-tumor-of-thyroid-a-case-report-of-synchronous-papillary-and-follicular-thyroid-carcinoma/373657.png","ImageObject",300,407,{"name":92,"@type":93},"McGucket","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-03","2026-09-23",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",14,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"Why are collision tumors of the thyroid clinically significant?","Question",{"text":113,"@type":114},"Collision tumors with differentiated thyroid carcinomas are exceedingly rare. Their rarity creates diagnostic challenges and affects decisions about surgical and adjuvant management.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"What cancers were found in this patient’s thyroid?",{"text":118,"@type":114},"Histopathology revealed two coincident left-lobe cancers: papillary carcinoma (pT1bN1a) and follicular carcinoma (pT2N0).",{"name":120,"@type":111,"acceptedAnswer":121},"What treatment was performed and what were the results so far?",{"text":122,"@type":114},"The patient underwent total thyroidectomy with central lymph node dissection, followed by thyroid hormone suppression and radioactive iodine therapy. No postoperative complications or cancer recurrence have been observed to date.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},373657,1790330810,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":39,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":46},1236954412713,"https://us-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","®  \n Clinical Case Report   \nCollision tumor of thyroid  \nA case report of synchronous papillary and follicular thyroid carcinoma  \nDabin Kim, MD, MMa , Susie Chin, MD, PhDb , Cheol-Wan Lim, MD, PhDa , Zisun Kim, MD, PhDa , Sung-Mo Hur, MD, PhDa ,*  \n\n| Abstract\u003Cbr>Rationale: Collision tumors involving differentiated thyroid carcinomas are exceedingly rare, despite the overall high prevalence of thyroid cancer.\u003Cbr>Patient concerns: A 65-year-old man was incidentally diagnosed with thyroid cancer during a staging workup for gastric cancer.\u003Cbr>Diagnoses: The histopathologic examination revealed 2 coincident cancers of the left thyroid lobe: papillary carcinoma (pT1bN1a) and follicular carcinoma (pT2N0) .\u003Cbr>Interventions: The patient underwent total thyroidectomy with central lymph node dissection, followed by thyroid hormone suppression and radioactive iodine therapy.\u003Cbr>Outcomes: No postoperative complications or cancer recurrence has been observed to date.\u003Cbr>Lessons: This case highlights the diagnostic challenges and surgical considerations associated with collision tumors of the thyroid. Appropriate management remains controversial; therefore, further case studies and consensus guidelines are necessary. Abbreviations: FTC = follicular thyroid cancer, MTC = medullary thyroid cancer, PTC = papillary thyroid cancer, TC = thyroid cancer. |\n| --- |\n| Keywords: collision tumor, follicular thyroid carcinoma, papillary thyroid carcinoma, thyroid neoplasms |\n\n1. Introduction  \nThyroid cancer (TC) is the most common endocrine cancer worldwide. [1] Well-differentiated TCs, comprising papillary thyroid cancer (PTC) and follicular thyroid cancer (FTC), account for approximately 90% of all TCs and are typically known to have an indolent clinical course. In contrast, medullary thyroid cancer (MTC), poorly differentiated thyroid cancer, and anaplastic thyroid cancer represent \u003C10% of TCsand are associated with aggressive behavior.[2] Collision tumors are rare pathological conditions that coexist with histologically discrete tumors in a single organ. Collision tumors have been documented in various organs throughout the body, including kidneys, stomach, skin, liver, and ovaries. [3] Likewise, collision tumors are rare in the thyroid gland, despite the relatively high incidence of TC. Here, we report the case of a male patient with an incidentally discovered collision tumor of PTC and FTC. Additionally, a brief literature review was conducted on cases  \nThis study was supported by the Soonchunhyang University Research fund. Written informed consent was obtained from the patient prior to publication. All authors agree to the publication of this article.  \nThe authors have no conflicts of interest to disclose.  \nData sharing not applicable to this article as no datasets were generated or analyzed during the current study.  \na Department of Surgery, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Gyeonggi-do, Korea, b Department of Pathology, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Gyeonggi-do, Korea.  \n* Correspondence: Sung-Mo Hur, Department of Surgery, Soonchunhyang  \nUniversity Bucheon Hospital, Soonchunhyang University College of Medicine, 170  \nof thyroid collision tumors involving papillary and follicular carcinomas.  \n2. Case presentation  \nA 65-year-old man was referred to the endocrine surgery department for the incidental detection of TC during a staging workup for gastric cancer. The patient had a medical history of hypertension and diabetes mellitus type 2, and did not have any family history ofTC or radiation to the neck area. No abnormal findings were observed upon physical examination. Multiple thyroid nodules were detected on chest computed tomography (Fig. 1), and the patient underwent thyroid ultrasonography. Approximately 9 thyroid nodules were found, 2 were categorized as 4 and 5 according to the thyroid imaging repo","cbCailDsg3Bhgy8A","https://ap.wps.com/l/cbCailDsg3Bhgy8A","pdf",1171892,"English","# Abstract\n# Introduction\n# Case presentation","[{\"question\":\"Why are collision tumors of the thyroid clinically significant?\",\"answer\":\"Collision tumors with differentiated thyroid carcinomas are exceedingly rare. Their rarity creates diagnostic challenges and affects decisions about surgical and adjuvant management.\"},{\"question\":\"What cancers were found in this patient’s thyroid?\",\"answer\":\"Histopathology revealed two coincident left-lobe cancers: papillary carcinoma (pT1bN1a) and follicular carcinoma (pT2N0).\"},{\"question\":\"What treatment was performed and what were the results so far?\",\"answer\":\"The patient underwent total thyroidectomy with central lymph node dissection, followed by thyroid hormone suppression and radioactive iodine therapy. No postoperative complications or cancer recurrence have been observed to date.\"}]","Collision tumor of thyroid - A case report of synchronous papillary and follicular thyroid carcinoma | PDF",1790200142]