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A 28-year-old man presented with cough and shortness of breath for nearly a year, and inspiratory stridor on examination. CT demonstrated a tracheal nodular mass with fat density and clear boundaries; bronchoscopy revealed >70% luminal stenosis and pathology confirmed sialolipoma. The lesion was resected via rigid bronchoscopy, and follow-up CT at 7 months showed no recurrence, supporting endoscopic excision and favorable prognosis.",{"@graph":69,"@context":122},[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/endotracheal-sialolipoma-a-rare-case-report-clinical-case-report/455046/",{"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/endotracheal-sialolipoma-a-rare-case-report-clinical-case-report/455046.png","ImageObject",300,407,{"name":92,"@type":93},"Aldword","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-07","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why is endotracheal sialolipoma considered difficult to diagnose?","Question",{"text":112,"@type":113},"It is extremely rare and can mimic other tracheal tumors. Accurate diagnosis relies on imaging features and pathological confirmation, with attention to diagnostic pitfalls discussed through literature synthesis.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What diagnostic findings were reported for the presented patient?",{"text":117,"@type":113},"Non-contrast CT identified a tracheal nodular lesion with fat density and clear boundaries. Bronchoscopy located the neoplasm about 10 mm above the carina and showed over 70% luminal stenosis, and pathology from the specimen supported sialolipoma.",{"name":119,"@type":110,"acceptedAnswer":120},"What treatment was used and what was the outcome?",{"text":121,"@type":113},"The patient underwent lesion resection via rigid bronchoscopy. Recovery was good, and a follow-up CT at 7 months after removal showed no evidence of recurrence.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},455046,1790741997,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":19,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":52,"preview_page_count":4},2336478940917,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","®  \n Clinical Case Report   \nEndotracheal sialolipoma A rare case report  \nYing Xu, MSca , Zhi-Bin Gao, MMa , Jian-Feng Chu, BMa , Qiong-Nan Shen, BMa ,*  \n\n| Abstract\u003Cbr>Rationale: Sialolipomas arising in the tracheobronchial tree are exceedingly rare. To date, only 6 cases of tracheobronchial sialolipoma have been documented in the English medical literature. A comprehensive understanding of the characteristics of this tumor is vital for accurate diagnosis and the development of effective treatment strategies. This study seeks to elucidate its features through a detailed case report and literature synthesis, aims to prevent diagnostic pitfalls and guide optimal treatment for this exceedingly rare tumor.\u003Cbr>Patient concerns: A 28-year-old male was referred to Yuyao People’s Hospital in December 2024, due to cough and shortness of breath for nearly 1 year.\u003Cbr>Diagnoses: Non-contrast chest computed tomography (CT) revealed a nodular lesion in the trachea. Bronchoscopy showed a neoplasm located approximately 10 mm above the tracheal carina, causing over 70% luminal stenosis. Pathological analysis of the surgical specimen led to a diagnosis of sialolipoma.\u003Cbr>Interventions: The patient underwent a lesion resection procedure via rigid bronchoscopy.\u003Cbr>Outcomes: The patient recovered well. A follow-up CT scan at 7 months after tumor removal showed no evidence of recurrence. Lessons: Endotracheal sialolipoma is a rare benign tumor. CT and magnetic resonance imaging are valuable tools for diagnosis (CT Hounsfield units suggest fatty components in the tumor) . The primary treatment is endoscopic tumor resection. The prognosis is favorable after complete excision.\u003Cbr>Abbreviations: CT = computed tomography, MGA = mucous gland adenoma, MRI = magnetic resonance imaging. |\n| --- |\n| Keywords: case report, endotracheal, sialolipoma, treatment |\n\n1. Introduction  \nSialolipoma is very rare, and is considered to be a variant of salivary gland lipoma. It was first described and reported by Nagao et al in 2001.[1] This tumor has been classified as a benign soft-tissue tumor in the 2017 World Health Organization classification of head and neck tumors. Based on the benign nature of the salivary gland components in the tumor, the recent WHO classification (2022) does not recommend using the term “adenolipoma.” Sialolipoma is composed of salivary gland and mature adipose tissue with clear boundaries. Typically, sialolipomas occur in both major and minor salivary glands, with the majority of cases observed in the parotid gland. [2] Sialolipoma in tracheobronchial tree is extremely rare. We searched the literature on PubMed up to February 2025, using the terms “sialolipoma,” “adenolipoma,” “tracheal,” “tracheobronchial,” and “bronchus.”Only 6 cases have been published, 2 of which were diagnosed  \nWritten informed consent has been obtained from the patient. The patient’s data were complete anonymization.  \nThe authors have no funding and conflicts of interest to disclose.  \nData sharing not applicable to this article as no datasets were generated or analyzed during the current study.  \nThis study was reviewed and approved by the Ethics Committee of Yuyao People’s Hospital (approval no. 2025-06-002). We certify that the study was performed and in accordance with the 1964 Declaration of Helsinki and its later amendments.  \na Department of Pathology, Yuyao People’s Hospital, Yuyao, China.  \nas adenolipoma. [3–8] Here we report a case of endotracheal sialolipoma.  \nNo formal statistical analysis was performed due to the single-patient design. The literature review was narrative, with descriptive summarization of previously reported cases.  \n2. Case report  \nA 28-year-old male was referred to the Yuyao People’s Hospital in December 2024, due to cough and shortness of breath for nearly 1 year. Physical examination showed inspiratory stridor.  \nNon-contrast chest computed tomography (CT) revealed a nodule lesion in the trachea. For further treatment, the pat","cbCaiqqNpOkqfm0u","https://ap.wps.com/l/cbCaiqqNpOkqfm0u","pdf",828030,"English","# Introduction\n# Case report\n# Ethics and disclosures","[{\"question\":\"Why is endotracheal sialolipoma considered difficult to diagnose?\",\"answer\":\"It is extremely rare and can mimic other tracheal tumors. Accurate diagnosis relies on imaging features and pathological confirmation, with attention to diagnostic pitfalls discussed through literature synthesis.\"},{\"question\":\"What diagnostic findings were reported for the presented patient?\",\"answer\":\"Non-contrast CT identified a tracheal nodular lesion with fat density and clear boundaries. Bronchoscopy located the neoplasm about 10 mm above the carina and showed over 70% luminal stenosis, and pathology from the specimen supported sialolipoma.\"},{\"question\":\"What treatment was used and what was the outcome?\",\"answer\":\"The patient underwent lesion resection via rigid bronchoscopy. Recovery was good, and a follow-up CT at 7 months after removal showed no evidence of recurrence.\"}]","Endotracheal sialolipoma - A rare case report - Clinical Case Report | PDF"]