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Incidentally Detected Low-Grade Appendiceal Mucinous Neoplasm Following Laparoscopic Appendectomy for Acute Appendicitis

Year: 2026

Type: article

Abstract: Appendiceal mucinous neoplasms are rare entities that account for a small proportion of all gastrointestinal malignancies and are most often discovered incidentally on histopathological examination of appendectomy specimens. We present the case of a 36-year-old woman who presented to the emergency department with acute right lower quadrant abdominal pain and was found to have acute appendicitis on computed tomography imaging. She underwent an uncomplicated laparoscopic appendectomy, and final pathology revealed a low-grade appendiceal mucinous neoplasm (LAMN) confined to the appendix, staged as pTis(LAMN). Postoperative colonoscopy was performed to evaluate the appendiceal orifice and exclude synchronous colorectal lesions. This case highlights the importance of routine histopathological examination of all appendectomy specimens and the need for appropriate postoperative surveillance in patients with incidentally discovered appendiceal mucinous neoplasms.

Source: Cureus

DOI: 10.7759/cureus.107008

Authors: Oscar A Vazquez, Felipe Alberto Camacho Cordovez, Mridul Pansari, Jay Oberoi, Anupam Gupta

Institutions: University of Florida, Jackson Memorial Hospital, Kempegowda Institute of Medical Sciences, Bangalore Medical College and Research Institute

Language: English

Topic: Intraperitoneal and Appendiceal Malignancies

Subfield: Surgery

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W7154285295