Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Mar 6, 2021; 9(7): 1728-1733
Published online Mar 6, 2021. doi: 10.12998/wjcc.v9.i7.1728
Mucinous appendiceal neoplasm: A case report
Alexandru Chirca, Lucian Negreanu, Andreea Iliesiu, Radu Costea
Alexandru Chirca, Radu Costea, Surgery II Department, University Hospital, Carol Davila University, Bucharest, Bucharest 050098, Romania
Lucian Negreanu, Gastroenterology II Department, University Hospital, Carol Davila University, Bucharest, Bucharest 050098, Romania
Andreea Iliesiu, Pathology Department, University Hospital, Carol Davila University, Bucharest, Bucharest 050098, Romania
Author contributions: All authors were involved in the care of patient, writing and corrections and approved the final version of the manuscript.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declare that they have no conflict of interest.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See:
Corresponding author: Lucian Negreanu, MD, PhD, Professor, Gastroenterology II, University Hospital, Carol Davila University, Bucharest, Splaiul independentei 169, sector 5, Bucharest, Bucharest 050098, Romania.
Received: October 25, 2020
Peer-review started: October 25, 2020
First decision: November 26, 2020
Revised: December 5, 2020
Accepted: December 29, 2020
Article in press: December 29, 2020
Published online: March 6, 2021

Primary appendiceal tumors are histologically diverse and have an insidious onset and few specific clinical manifestations. In the majority of cases, these tumors are discovered after appendectomy during pathological exam of the resected tissue. Treatment may include appendectomy (simple or radical) and right hemicolectomy depending on factors such as histological type, tumor size and lymph node/organ involvement. The aim of this case study is to describe a rare case of a giant appendicular mucocele and raise awareness of this condition and its management options and follow-up protocol.


We present the case of a 43-year-old patient who presented to our emergency department with mild right lower quadrant pain. After the initial check-up and imaging exams, he underwent surgery, where a giant 20 cm × 13 cm appendicular tumor was found and resected. Appendicular mucocele was suspected due to the macroscopic appearance and was later confirmed by the pathological exam. The patient’s postoperative evolution was uneventful, and after discharge, he was included in our follow-up program.


In conclusion, mucinous appendiceal neoplasms embody a rare pathology; they are asymptomatic or have few, unspecific clinical signs and in many cases are discovered after appendectomy.

Keywords: Appendiceal tumors, Appendicular mucocele, Mucinous appendiceal neoplasms, Case report

Core Tip: Mucinous appendiceal neoplasms represents a rare pathology with unspecific sometimes asymptomatic clinical signs. Preoperative diagnosis or suspicion is important for the operative strategy. Based on staging and histological findings, simple or radical appendectomy using open or laparoscopic approach can be safely performed for low-grade appendiceal mucinous neoplasm, if the diagnostic criteria are met.