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This case report documents an atypical origin from intestinal duplication. A 33-year-old male presented with an abdominal mass; CT demonstrated a cystic lesion between the pancreatic tail and adjacent bowel duct, with marked cyst wall enhancement. Laparoscopic resection and pathology confirmed low-grade mucinous tumor features consistent with intestinal duplication. Follow-up with CT and tumor markers showed no recurrence.",{"@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/low-grade-mucinous-neoplasm-originating-from-intestinal-duplication-a-case-report-and-review-of-the-literature/367094/",{"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/low-grade-mucinous-neoplasm-originating-from-intestinal-duplication-a-case-report-and-review-of-the-literature/367094.png","ImageObject",300,407,{"name":92,"@type":93},"Olivia Brown","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-28","2026-09-23",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the typical origin of low-grade mucinous neoplasms?","Question",{"text":112,"@type":113},"They typically originate from the appendix and are characterized by low-grade mucus-secreting columnar epithelial lining and smooth muscle features.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What did imaging show in this reported case?",{"text":117,"@type":113},"Abdominal CT identified a cystic mass between the pancreatic tail and an adjacent bowel duct, with significant enhancement of the cyst wall on contrast-enhanced imaging.",{"name":119,"@type":110,"acceptedAnswer":120},"How were the diagnosis and tumor origin confirmed?",{"text":121,"@type":113},"The patient underwent laparoscopic surgical resection, and pathology matched the histological and immunohistochemical characteristics of low-grade mucinous tumors arising from intestinal duplication.","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},367094,1790196813,{"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":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"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":143,"read_time":144},16904993612988,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","Yin et al. World Journal of Surgical Oncology (2025) 23:20  \n[https://doi.org/10.1186/s12957-025-03682-9](https://doi.org/10.1186/s12957-025-03682-9)  \nWorld Journal of Surgical Oncology  \nCASE REPORT Open Access  \nLow-grade mucinous neoplasm originating from intestinal duplication: a case report and review of the literature  \nHuihui Yin 1, Jie Yu 1 and Yunzhao Chen 1,2,3*  \nAbstract  \nBackground Low-grade mucinous neoplasms typically originate from the appendix and are characterized by a lining of low-grade mucus-secreting columnar epithelial cells and smooth muscle. However, atypical origins can occur, as demonstrated in this case report.  \nCase presentation We present a case involving a 33-year-old male who, upon physical examination, was found to have an abdominal mass. A computed tomography (CT) scan revealed a cystic mass located between the pancreatic tail and the adjacent bowel duct, with significant enhancement of the cyst wall observed on contrast-enhanced imaging. The patient subsequently underwent laparoscopic surgical resection of the mass, and the resected specimen was sent for pathological evaluation. The pathology results were consistent with the histological morphology and immunohistochemical characteristics of low-grade mucinous tumors arising from intestinal duplication. Three anda half years post-resection, the patient returned for a follow-up examination, during which abdominal CT and blood tumor markers indicated no signs of tumor recurrence.  \nConclusions While low-grade mucinous tumors predominantly originate from the appendix, this case illustratesan unusual occurrence of such neoplasms arising from intestinal duplication. This report aims to enhance clinical awareness of low-grade mucinous tumors originating from intestinal duplication, thereby improving the rates of preoperative diagnosis and reducing instances of misdiagnosis.  \nKeywords Intestinal duplication, Low-grade mucinous tumors, Retroperitoneal, Pathological features  \n*Correspondence:  \nYunzhao Chen  \n[chenyunzhao@hmc.edu.cn](chenyunzhao@hmc.edu.cn)  \n1Cancer Center, Department of Pathology, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, 158 Shangtang Road, Hangzhou, Zhejiang 310014, China  \n2Key Laboratory of Endocrine Gland Diseases of Zhejiang Province, Hangzhou, Zhejiang 310014, People’s Republic of China  \n3Clinical Research Center for Cancer of Zhejiang Province, Hangzhou, Zhejiang 310014, People’s Republic of China  \nIntroduction  \nIntestinal duplication is a rare congenital abnormality that can occur anywhere along the gastrointestinal tract, from the mouth to the anus, with the ileum being the most common site. This condition typically becomes evident in early childhood, with approximately 65.8% of cases identified before the age of 2, while occurrences in adults are rare [1]. The clinical presentations of intestinal duplication vary depending on the type and location of the duplication. In neonates and infants, the most common symptoms include vomiting and abdominal distension; however, many duplications remain asymptomatic  \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 are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the per","cbCaisSUaU89GSnm","https://ap.wps.com/l/cbCaisSUaU89GSnm","pdf",1570966,"English","# Abstract\n## Background\n## Case presentation\n## Conclusions\n# Introduction\n# Case presentation\n## Chief complaints\n## Laboratory examinations\n## Imaging examinations","[{\"question\":\"What is the typical origin of low-grade mucinous neoplasms?\",\"answer\":\"They typically originate from the appendix and are characterized by low-grade mucus-secreting columnar epithelial lining and smooth muscle features.\"},{\"question\":\"What did imaging show in this reported case?\",\"answer\":\"Abdominal CT identified a cystic mass between the pancreatic tail and an adjacent bowel duct, with significant enhancement of the cyst wall on contrast-enhanced imaging.\"},{\"question\":\"How were the diagnosis and tumor origin confirmed?\",\"answer\":\"The patient underwent laparoscopic surgical resection, and pathology matched the histological and immunohistochemical characteristics of low-grade mucinous tumors arising from intestinal duplication.\"}]","Low-grade mucinous neoplasm originating from intestinal duplication - a case report and review of the literature | PDF",1790169251,15]