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Related Concept Videos

Appendicitis-I: Introduction01:22

Appendicitis-I: Introduction

242
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...
242
Appendicitis-II: Diagnostic Studies and Management01:29

Appendicitis-II: Diagnostic Studies and Management

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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:
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...
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Large Intestine01:09

Large Intestine

1.0K
The large intestine is divided into three main regions: the cecum, colon, and rectum. Extending from the ileocecal valve to the anus, it frames the small intestine on three sides.
The ileocecal sphincter, a mucous membrane fold, guards the opening from the ileum to the large intestine. This valve permits material from the small intestine to pass into the large intestine. Attached to the ileocecal valve is the cecum. This small pouch, approximately 6 cm long, has a twisted, coiled tube known as...
1.0K
Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

278
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,...
278
Anatomy of the Intestines01:23

Anatomy of the Intestines

72.4K
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
72.4K
Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

215
Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
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Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch
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The Vermiform Appendix and Its Pathologies.

Marian Constantin1,2, Livia Petrescu3, Cristina Mătanie3

  • 1Institute of Biology of Romanian Academy, 060031 Bucharest, Romania.

Cancers
|August 12, 2023
PubMed
Summary
This summary is machine-generated.

The vermiform appendix, once thought useless, plays roles in immunity, hormone secretion, and gut bacteria storage. Blockages can cause appendicitis, and tumors can develop, highlighting its clinical significance.

Keywords:
adenocarcinomaappendiceal tumorsappendicitisvermiform appendix

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Area of Science:

  • Gastroenterology
  • Surgical Anatomy
  • Pathology

Background:

  • The vermiform appendix, a muscular, cylindrical structure, is highly mobile and often retrocecal.
  • Historically viewed as vestigial, emerging evidence highlights its roles in immune function (B lymphocyte maturation, IgA production), endocrine function (amine/hormone secretion), and digestive health (beneficial bacteria reservoir).
  • Appendiceal lumen obstruction by fecoliths, seeds, or lymph nodes impedes mucus drainage, leading to inflammation (appendicitis) due to mucus accumulation and wall tension.

Purpose of the Study:

  • To provide a comprehensive review of the vermiform appendix.
  • To detail its anatomy, embryology, inflammatory pathologies, congenital anomalies, and neoplastic processes.
  • To establish an updated framework for understanding, diagnosing, and treating appendiceal conditions.

Main Methods:

  • Literature review of anatomical, embryological, and pathological studies.
  • Synthesis of information on appendiceal functions, diseases, and tumors.
  • Comparative analysis of mucinous and non-mucinous appendiceal tumors.

Main Results:

  • The appendix possesses immune, endocrine, and digestive functions.
  • Appendicitis results from luminal obstruction and mucus accumulation.
  • Neoplastic processes, including mucinous and non-mucinous tumors, can occur, with varying prognoses.

Conclusions:

  • The vermiform appendix is a functionally relevant organ with significant pathological potential.
  • Understanding its diverse roles and pathologies is crucial for accurate diagnosis and effective treatment.
  • This review offers a consolidated resource for clinicians and researchers.