[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-441754-105":59,"doc-detail-441754-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","impact-of-postoperative-surveillance-via-computed-tomography-after-radical-resection-for-thymoma","Impact of postoperative surveillance via computed tomography after radical resection for thymoma","","Outpatient follow-up using computed tomography (CT) after thymoma resection is standard for assessing recurrence and detecting second malignancies, yet the optimal CT surveillance interval is uncertain. This retrospective single-institution study evaluated 143 patients followed with CT after complete resection between 2006 and 2022, stratified into half-, 1-, and 2-year CT interval groups. Overall survival, recurrence-free survival, recurrence rates, and post-recurrence treatments showed no significant differences, and CT interval was not a significant independent prognostic factor. Postoperative CT follow-up extending beyond 1 year appears acceptable and feasible.",{"@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/impact-of-postoperative-surveillance-via-computed-tomography-after-radical-resection-for-thymoma/441754/",{"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/impact-of-postoperative-surveillance-via-computed-tomography-after-radical-resection-for-thymoma/441754.png","ImageObject",300,407,{"name":92,"@type":93},"Melati","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",13,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"Why is CT surveillance recommended after thymoma resection?","Question",{"text":113,"@type":114},"CT follow-up is recommended to evaluate tumor recurrence and detect second malignancies during outpatient care.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"How were patients grouped in this study?",{"text":118,"@type":114},"The retrospective study analyzed 143 patients and stratified them into three CT interval groups: half-year, 1-year, and 2-year.",{"name":120,"@type":111,"acceptedAnswer":121},"What did the study find about CT interval length and patient outcomes?",{"text":122,"@type":114},"Overall survival and recurrence-free survival did not differ significantly among the three interval groups, and the CT follow-up interval was not significantly associated with overall survival.","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},441754,1790982797,{"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":140,"language":141,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":67,"update_tm":145,"read_time":41,"preview_page_count":4},962085570644,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","Original Article  \nImpact of postoperative surveillance via computed tomography after radical resection for thymoma  \nNatsumi Maru, Haruaki Hino, Takahiro Utsumi, Aki Kobayashi, Kento Fukumoto, Hiroshi Matsui, Yohei Taniguchi, Tomohito Saito, Tomohiro Murakawa  \nDepartment of Thoracic Surgery, Kansai Medical University, Osaka, Japan  \nContributions: (I) Conception and design: N Maru, H Hino, T Murakawa; (II) Administrative support: N Maru; (III) Provision of study materials or patients: All authors; (IV) Collection and assembly of data: N Maru; (V) Data analysis and interpretation: N Maru; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors.  \nCorrespondence to: Natsumi Maru, MD, PhD. Department of Thoracic Surgery, Kansai Medical University, 2-3-1 Shin-machi Hirakata, Osaka 573-  \n1191, [Japan. Email: m.teresia.0814@gmail.com](Japan. Email: m.teresia.0814@gmail.com).  \nBackground: Outpatient follow-up using computed tomography (CT) after thymoma resection is recommended to evaluate tumor recurrence and detect second malignancies. However, the optimal interval for CT surveillance remains unclear. We aimed to investigate the association between CT surveillance  \nintervals and postoperative survival after thymoma resection.  \nMethods: This retrospective study analyzed 143 patients who underwent periodic CT scans after complete thymoma resection at a single institution between 2006 and 2022. Patients were stratified into three groups based on CT interval: half-, 1-, and 2-year groups. CT intervals were stratified according to the attending physician’s clinical judgment. Overall survival (OS), recurrence-free survival (RFS), tumor recurrence rates, and post-recurrence treatments were compared among the three interval groups. A multivariate analysis was  \nperformed to evaluate the independent prognostic impact of CT intervals.  \nResults: Among the 143 patients included, 82 were assigned to the half-year group, 33 to the 1-year group, and 28 to the 2-year group. The 7-year OS rates were 96.1% in the half-year group, 100% in the 1-year group, and 100% in the 2-year group (P=0.34) . The 7-year RFS rates were 85.2%, 92.3%, and 88.1% in the half-, 1-, and 2-year groups, respectively (P=0.37) . No significant differences were found in overall and RFS among the three groups. Tumor recurrence rates were 11.0% in the half-year group, 3.0% in the 1-year group, and 7.1% in the 2-year group (P=0.38) . No significant differences were noted in recurrence detection modalities and treatment approaches among the three groups (P>0.99, 0.99) . In the multivariate analysis, CT  \nfollow-up interval was not significantly associated with OS.  \nConclusions: Postoperative CT follow-up at intervals longer than 1 year may be acceptable and feasible  \nfor patients after thymoma resection.  \nKeywords: Computed tomography surveillance (CT surveillance); thymoma; postoperative follow-ups; second  \nmalignancy  \nReceived: 03 September 2025; Accepted: 17 November 2025; Published online: 26 December 2025.  \ndoi: 10.21037/med-25-41  \nView this article at: [https://dx.doi.org/10.21037/med-25-41](https://dx.doi.org/10.21037/med-25-41)  \nIntroduction  \nThymomas, among the most common thymic epithelial tumors located in the anterior mediastinum, have relatively favorable survival rates after complete resection. According to European and United States guidelines,  \nregular contrast-enhanced computed tomography (CT) surveillance, at intervals of at least once every 6–12 months, is recommended for detecting recurrence or second malignancies. Contrast-enhanced CT with a delayed phase is generally preferred to achieve optimal delineation of  \n© AME Publishing Company. Mediastinum 2025;9:31 | [https://dx.doi.org/10.21037/med-25-41](https://dx.doi.org/10.21037/med-25-41)  \nPage 2 of 12 Mediastinum, 2025  \nanterior mediastinal lesions. Magnetic resonance imaging may be considered in specific clinical situations, such as intolerance to contrast o","cbCaihSWgS6UTT0m","https://ap.wps.com/l/cbCaihSWgS6UTT0m","pdf",334856,12,"English","# Background\n# Methods\n# Results\n# Conclusions\n# Keywords\n# What is known and what is new?","[{\"question\":\"Why is CT surveillance recommended after thymoma resection?\",\"answer\":\"CT follow-up is recommended to evaluate tumor recurrence and detect second malignancies during outpatient care.\"},{\"question\":\"How were patients grouped in this study?\",\"answer\":\"The retrospective study analyzed 143 patients and stratified them into three CT interval groups: half-year, 1-year, and 2-year.\"},{\"question\":\"What did the study find about CT interval length and patient outcomes?\",\"answer\":\"Overall survival and recurrence-free survival did not differ significantly among the three interval groups, and the CT follow-up interval was not significantly associated with overall survival.\"}]","Impact of postoperative surveillance via computed tomography after radical resection for thymoma | PDF",1790697337]