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Related Concept Videos

Appendicitis-I: Introduction01:22

Appendicitis-I: Introduction

575
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.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
575
Appendicitis-II: Diagnostic Studies and Management01:29

Appendicitis-II: Diagnostic Studies and Management

143
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:
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
143
Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

396
Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
396
Abdominal Regions and Quadrants01:19

Abdominal Regions and Quadrants

11.8K
To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
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Secondary Lymphoid Organs01:15

Secondary Lymphoid Organs

3.1K
Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

21
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Related Experiment Video

Updated: Sep 7, 2025

Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch
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Vermiform Appendix and the Potential for Missed Pathologies.

Bidish K Patel1,2, Ashish R Singh3, Sandyya Umamahesweran1

  • 1Pathology, Jawaharlal Institute of Postgraduate Medical Education & Research, Puducherry, IND.

Cureus
|June 20, 2022
PubMed
Summary

The appendix, often overlooked, harbors diverse pathologies beyond appendicitis. Thorough histopathologic examination of all appendix specimens is crucial for detecting rare lesions and ensuring accurate patient management.

Keywords:
appendectomyappendix carcinoidappendix endometriosisappendix histopathologyappendix lymphomaappendix polypappendix tumorsincidental findings in appendixrare lesions in appendixxanthogranulomatous appendicitis

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Area of Science:

  • Gastroenterology
  • Surgical Pathology
  • Oncology

Background:

  • The appendix is historically undervalued, often dismissed as vestigial.
  • Emerging data highlight its role in gut immunity and as a source of pseudomyxoma peritonei.
  • This study emphasizes the need for serious consideration of appendix pathology.

Purpose of the Study:

  • To screen appendectomy specimens for rare, incidental, or diagnostically uncertain lesions.
  • To underscore the importance of meticulous appendix sampling and histopathologic assessment.
  • To identify pathologies that may be missed by clinical or radiological evaluation.

Main Methods:

  • A ten-year retrospective review of all appendectomy specimens was conducted.
  • Specimens with diagnoses other than acute/chronic appendicitis or pseudomyxoma peritonei were selected.
  • Representative rare cases were chosen for detailed discussion.

Main Results:

  • Forty-three lesions across 12 etiologies met the inclusion criteria.
  • Twenty-five appendices appeared normal, and 27 lesions were not suspected clinically or radiologically.
  • Diagnoses included lymphoma, metastasis, carcinoid tumors, pinworm infestation, and endometriosis.

Conclusions:

  • Compulsory, careful, and representative sampling of the appendix is essential.
  • Every appendix specimen should be treated as potentially harboring pathology.
  • Missed rare diagnoses can delay therapy and impact cancer staging and management.