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This case report documents a 45-year-old woman whose asymptomatic LAMN was incidentally discovered during an elective cesarean section at 40 weeks’ gestation. Intraoperative findings included thick gelatinous material consistent with pseudomyxoma peritonei and a tumor-like appendiceal mass, prompting appendectomy, biopsy, and urgent oncologic management with extended surgery. Multidisciplinary assessment supported optimal outcomes for mother and neonate.",{"@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-appendiceal-mucinous-neoplasm-case-report/457608/",{"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-appendiceal-mucinous-neoplasm-case-report/457608.png","ImageObject",300,407,{"name":92,"@type":93},"Alexandar","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why is diagnosing LAMN during pregnancy difficult?","Question",{"text":112,"@type":113},"Symptoms are often non-specific, imaging options can be limited, and the tumor may resemble appendicitis clinically, delaying recognition.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What intraoperative findings led to further treatment in this case?",{"text":117,"@type":113},"Inspection revealed approximately 400 ml of thick gelatinous material in the abdominal cavity and a tumor-like mass on the appendix, supporting mucin dissemination.",{"name":119,"@type":110,"acceptedAnswer":120},"What does the report conclude about incidental discovery during a cesarean section?",{"text":121,"@type":113},"Incidental LAMN during cesarean delivery is extremely rare, and the authors emphasize intraoperative vigilance, thorough abdominal assessment, and multidisciplinary management to improve outcomes for both mother and neonate.","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},457608,1791224832,{"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":44,"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,"preview_page_count":4},962090768658,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","e-ISSN 1941-5923  \n© Am J Case Rep, 2025; 26: e949554 DOI: 10. 12659/AJCR.949554  \nReceived: 2025.04.24  \nAccepted: 2025.11.02  \nAvailable online: 2025.11.18  \nPublished: 2025.12.23  \nAuthors’ Contribution: Study Design A  \nData Collection B Statistical Analysis C Data Interpretation D Manuscript Preparation E Literature Search F Funds Collection G  \nAE 1  \nAE 1  \nCE 1  \nF 1  \nE 1  \nE 2  \nF 2,3 DG 2,3 DG 4  \nA 2  \nCorresponding Author: Financial support: Conflict of interest:  \nLow-Grade Appendiceal Mucinous Neoplasm  \nas an Incidental Finding During Cesarean Section: A Case Report  \nVesna Paunovic  Tomislav Paunovic Aleksa Jokic   \nBojana S. Ivic  Aleksandra Petrovic Nina Pejic  Milos Stulic   \nJelena Martinov Nestorov Jovan Jevtic   \nZeljko Vlaisavljevic   \nZeljko Vlaisavljevic, e-mail: [kcszeljko@gmail.com](kcszeljko@gmail.com)  \nNone declared  \nNone declared  \n1 University Obstetrics and Gynecology, Clinic “Narodni Front”, Belgrade, Serbia  \n2 Gastroenterology and Hepatology Clinic, University Clinical Center of Serbia, Belgrade, Serbia  \n3 Faculty of Medicine, University of Belgrade, Belgrade, Serbia  \n4 Institute of Pathology, Faculty of Medicine University of Belgrade, Belgrade, Serbia  \nPatient: Female, 45-year-old  \nFinal Diagnosis: Low grade mucinous neoplasm  \nSymptoms: Abdominal pain  \nClinical Procedure: —  \nSpecialty: Gastroenterology and Hepatology • Obstetrics and Gynecology  \nObjective: Rare disease  \nBackground: Appendiceal mucinous neoplasm (AMN) is a rare tumor, representing 0.2-0.7% of all appendiceal neoplasms. Low-grade AMN (LAMN) occurs more often in women and is often misdiagnosed as appendicitis due to its vague symptoms. It involves mucin accumulation causing appendiceal dilation and carries a risk of pseudomyxoma peritonei (PMP). Prognosis depends on disease extent, with survival rates declining once the tumor spreads beyond the appendix. During pregnancy, diagnosis is challenging because of non-specific symptoms and limited imaging options, highlighting the importance of clinical vigilance and thorough intraoperative evaluation to ensure timely diagnosis and management.  \nCase Report: This report describes the case of a 45-year-old woman with LAMN, incidentally discovered during an elective cesarean section at 40 weeks of gestation, and is the first documented report of this type in Serbia. The patient was asymptomatic, with unremarkable prenatal screenings. Intraoperative inspection revealed approximately 400 ml of thick gelatinous material (PMP) in the abdominal cavity and a tumor-like mass on the appen  \ndix. Following the initial appendectomy and biopsy, confirmed LAMN and elevated CA125 led to a secondary operation: extended right hemicolectomy and total omentectomy. This procedure confirmed mucin dissemination, highlighting the urgent need for oncologic intervention despite the tumor’s low grade.  \nConclusions: Incidental discovery of LAMN during a cesarean section is extremely rare. This case demonstrates the need for intraoperative vigilance, thorough abdominal assessment, and multidisciplinary management to ensure accurate diagnosis and optimal outcomes for both mother and neonate in such complex situations.  \nKeywords: 17-alpha-Hydroxyprogesterone • Cesarean Section • Meditation • Operating Room Technicians • Pregnancy  \nFull-text PDF: [https://www.amjcaserep.com/abstract/index/idArt/949554](https://www.amjcaserep.com/abstract/index/idArt/949554)  \n2245  —  2  34  \nPublisher’s note: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher  \nThis work is licensed under Creative Common AttributionNonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)  \ne949554-1  \nIndexed in: [PMC] [PubMed] [Emergi","cbCaicsmuRgZ5MG2","https://ap.wps.com/l/cbCaicsmuRgZ5MG2","pdf",3037214,"English","# Abstract\n## Background\n## Case Report\n## Conclusions","[{\"question\":\"Why is diagnosing LAMN during pregnancy difficult?\",\"answer\":\"Symptoms are often non-specific, imaging options can be limited, and the tumor may resemble appendicitis clinically, delaying recognition.\"},{\"question\":\"What intraoperative findings led to further treatment in this case?\",\"answer\":\"Inspection revealed approximately 400 ml of thick gelatinous material in the abdominal cavity and a tumor-like mass on the appendix, supporting mucin dissemination.\"},{\"question\":\"What does the report conclude about incidental discovery during a cesarean section?\",\"answer\":\"Incidental LAMN during cesarean delivery is extremely rare, and the authors emphasize intraoperative vigilance, thorough abdominal assessment, and multidisciplinary management to improve outcomes for both mother and neonate.\"}]","Low-Grade Appendiceal Mucinous Neoplasm - Case Report | PDF",1790749915,15]