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Appendicitis-I: Introduction

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The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
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Updated: Jun 29, 2025

Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch

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Atypical Duplex appendix arising from the ascending colon: a case report.

Ahmed Taha Elsherbini^1,2, Mohamed A Atta³, Sahar Elshahat^4,5

¹Surgery Department, Faculty of Medicine, Mansoura University, Mansoura, 33516, Egypt.

Journal of Medical Case Reports

|March 29, 2024

Summary

Duplex appendicitis, a rare condition involving an extra appendix, can cause recurrent abdominal pain even after a previous appendectomy. This case highlights the importance of considering duplex appendicitis in unusual abdominal pain presentations.

Keywords:

Appendectomy Appendicitis Ascending colon Duplex appendix Recurrent acute abdomen

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Area of Science:

Gastroenterology
Surgical Anatomy

Background:

Duplex appendix, a rare congenital anomaly, involves the presence of an additional vermiform appendix.
While typically arising from the cecum, duplex appendices can originate from other colonic segments, posing diagnostic challenges.

Observation:

A 29-year-old male with a prior appendectomy presented with recurrent acute abdominal pain.
The pain was attributed to duplex appendicitis originating from the mid-ascending colon, initially misdiagnosed as right colon diverticulitis.

Findings:

The patient underwent a second laparoscopic appendectomy for the duplex appendix.
Postoperative recovery was uneventful, confirming the diagnosis and successful treatment.

Implications:

Duplex appendicitis necessitates inclusion in the differential diagnosis for recurrent acute abdominal pain, especially in post-appendectomy patients.
This condition underscores the importance of thorough diagnostic evaluation for persistent or recurrent abdominal pathologies.