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Related Concept Videos

Appendicitis-I: Introduction01:22

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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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Appendicitis-II: Diagnostic Studies and Management01:29

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Diagnosing and managing appendicitis requires a structured and comprehensive approach that spans from initial assessment to postoperative care. Here is an overview of the process:
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Large Intestine01:09

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The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
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Related Experiment Video

Updated: Jan 7, 2026

Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch
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[Duplication of the vermiform appendix].

Poya Livälven1, Isabella Hagenäs Wendel2, Kristian Ängeby3

  • 1-ST-läkare, akutsjukvård, Södersjukhuset, Stockholm.

Lakartidningen
|January 5, 2026
PubMed
Summary
This summary is machine-generated.

Duplication of the vermiform appendix is a rare condition often missed in imaging, leading to potential complications. Early suspicion in patients with recurrent right lower quadrant pain post-appendectomy is crucial for timely diagnosis and treatment.

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Area of Science:

  • Gastroenterology
  • Surgical Anatomy
  • Medical Imaging

Background:

  • Vermiform appendix duplication is an exceptionally rare congenital anomaly.
  • It presents diagnostic challenges, often being overlooked in medical imaging.
  • Associated gastrointestinal and genitourinary anomalies can occur.

Purpose of the Study:

  • To highlight the significance of considering appendix duplication in specific clinical scenarios.
  • To emphasize the diagnostic difficulties and potential for missed diagnoses.
  • To underscore the importance of thorough patient history, including pediatric records.

Main Methods:

  • Review of existing literature and case reports on appendix duplication.
  • Analysis of diagnostic imaging modalities (CT, ultrasound) in relation to missed diagnoses.
  • Correlation of appendix duplication with co-existing congenital anomalies.

Main Results:

  • Appendix duplication is frequently missed by computed tomography and ultrasound.
  • Recurrent right lower quadrant pain after appendectomy is a key indicator.
  • Association with other teratological phenomena necessitates comprehensive medical history review.

Conclusions:

  • Appendix duplication requires a high index of suspicion in patients with persistent right lower quadrant pain post-appendectomy.
  • Diagnostic imaging limitations necessitate careful clinical correlation.
  • Failure to diagnose can lead to significant patient morbidity and mortality.