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This case report describes a Japanese man in his 70s with an incidentally detected tracheal mass during routine screening, without specific symptoms. Imaging showed a strongly enhanced 1.6 cm lesion at the tracheal bifurcation extending into the left main bronchus, with low malignant potential suggested by MRI and PET-CT. Endoscopic high-frequency electrocoagulation and argon plasma coagulation eradicated the polypoidal tumor; pathology confirmed bronchial glomus tumor without malignancy. Careful follow-up after avoiding risky carinal resection showed no stenosis or dyspnea over 41 months.",{"@graph":69,"@context":126},[70,84,105],{"@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/glomus-tumor-arising-in-the-tracheal-bifurcation-a-case-report/422484/",{"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/glomus-tumor-arising-in-the-tracheal-bifurcation-a-case-report/422484.png","ImageObject",300,407,{"name":92,"@type":93},"Indoniesian Boy","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-09-28",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118,122],{"name":109,"@type":110,"acceptedAnswer":111},"What is the main clinical finding in this case report?","Question",{"text":112,"@type":113},"A Japanese man in his 70s had an incidentally detected tracheal mass during routine health screening, with no specific clinical symptoms or airway stenosis signs.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How was the tumor evaluated before treatment?",{"text":117,"@type":113},"Contrast-enhanced CT identified a strongly enhanced 1.6 cm mass at the posterior wall of the tracheal bifurcation extending into the left main bronchus; MRI and PET-CT suggested low malignant potential.",{"name":119,"@type":110,"acceptedAnswer":120},"What treatment was performed, and what did pathology confirm?",{"text":121,"@type":113},"Endoscopic treatment with high-frequency electrocoagulation and argon plasma coagulation eradicated the polypoidal mass; pathology confirmed a bronchial glomus tumor and was negative for malignancy.",{"name":123,"@type":110,"acceptedAnswer":124},"What was the follow-up outcome after avoiding radical carinal resection?",{"text":125,"@type":113},"The patient was carefully followed for 41 months without radical resection, and no airway stenosis or dyspnea was observed.","https://schema.org",{"og:url":83,"og:type":128,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":130,"canonical":83},"index,follow",{"doc_id":132,"site_id":62},422484,1790718204,{"code":4,"msg":5,"data":135},{"doc_id":132,"user_id":136,"nickname":92,"user_avatar":137,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":138,"file_id":139,"file_url":140,"file_type":141,"file_size":142,"view_count":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"language":143,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":144,"faqs":145,"seo_title":146,"seo_description":67,"update_tm":147,"read_time":148,"preview_page_count":4},962090760608,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Nitanda etal. Journal of Medical Case Reports (2026) 20:4  \n[https://doi.org/10.1186/s13256-025-05704-2](https://doi.org/10.1186/s13256-025-05704-2)  \nJournal of Medical Case Reports  \n CASE REPORT Open Access  \nGlomus tumor arising in the tracheal bifurcation: a case report  \nHiroyuki Nitanda 1* , Tomonori Kawasaki2, Ryo Taguchi1, Tetsuya Umesaki 1, Yoshinobu Ichiki 1, Hirozo Sakaguchi1 and Hironori Ishida 1  \nAbstract  \nBackground Glomus tumors are rare, benign mesenchymal neoplasms that account for less than 2% of all soft tissue tumors and are uncommon in visceral organs. Endobronchial glomus tumors are particularly rare, with fewer than 80 cases reported and only three cases of glomus tumor arising in the tracheal bifurcation have been reported thus far. Case presentation The patient, a Japanese male in his 70s, was diagnosed with a tracheal mass during a routine health check. He had no specific clinical symptoms. His past medical history included myocardial infarction and brain infarction, and he had been taking three types of antithrombotic medication. Computed tomography revealed a 1.6 cm strongly enhanced mass lesion originating in the posterior wall of the tracheal bifurcation and extending into the left main bronchus. Magnetic resonance imaging and positron emission tomography–computed tomography suggested that the tumor had low malignant potential. Bronchoscopic examination revealed a polypoidal mass, which was later eradicated via high-frequency electrocoagulation and argon plasma coagulation. Pathology confirmed that the mass was a bronchial glomus tumor and negative for malignancy. Owing to the risk associated with carinal resection, the patient was carefully followed up with without radical resection. No airway stenosis or dyspnea was observed during the 41-month follow-up period.  \nConclusions When deciding the optimal treatment strategy for tracheal glomus tumors, the location and malignant potential of the tumor should be considered. Careful follow-up is required if endoscopic treatment is chosen. Keywords Glomus tumor, Tracheal bifurcation, Bronchoscopy, Endoscopic treatment, Case report  \nBackground  \nGlomus tumors (GTs) are small and usually benign mesenchymal neoplasms closely resembling modified smooth muscle cells of normal glomus bodies. They account for less than 2% of all soft tissue tumors and mainly arise in  \n*Correspondence:  \nHiroyuki Nitanda[nitanda@saitama-med.ac.jp](nitanda@saitama-med.ac.jp)  \n1 Department of General Thoracic Surgery, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka-City, Saitama 350-1298, Japan  \n2 Department of Pathology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka-City, Saitama 350-1298, Japan  \nthe distal extremities, especially in the subungual region [1].  \nThey are rare in visceral organs, where normal glomus bodies are absent. However, several unusual sites have been reported, including the gastrointestinal tract, urinary bladder, and respiratory tract.  \nNearly 80 endobronchial GTs have been reported to date, with only three occurring in the tracheal bifurcation. Furthermore, only one of these three cases was treated endoscopically. This report describes the clinical course of a GT arising in the tracheal bifurcation that was treated endoscopically after which the patient survived for more than 3 years.  \n© The Author(s) 2025. Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article ar","cbCaibCMz5HUM86y","https://ap.wps.com/l/cbCaibCMz5HUM86y","pdf",2081954,"English","# Abstract\n# Background\n# Case presentation\n## Imaging findings\n## Bronchoscopic findings and treatment\n# Conclusions\n# Keywords","[{\"question\":\"What is the main clinical finding in this case report?\",\"answer\":\"A Japanese man in his 70s had an incidentally detected tracheal mass during routine health screening, with no specific clinical symptoms or airway stenosis signs.\"},{\"question\":\"How was the tumor evaluated before treatment?\",\"answer\":\"Contrast-enhanced CT identified a strongly enhanced 1.6 cm mass at the posterior wall of the tracheal bifurcation extending into the left main bronchus; MRI and PET-CT suggested low malignant potential.\"},{\"question\":\"What treatment was performed, and what did pathology confirm?\",\"answer\":\"Endoscopic treatment with high-frequency electrocoagulation and argon plasma coagulation eradicated the polypoidal mass; pathology confirmed a bronchial glomus tumor and was negative for malignancy.\"},{\"question\":\"What was the follow-up outcome after avoiding radical carinal resection?\",\"answer\":\"The patient was carefully followed for 41 months without radical resection, and no airway stenosis or dyspnea was observed.\"}]","Glomus tumor arising in the tracheal bifurcation - a case report | PDF",1790627635,15]