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Related Concept Videos

Appendicitis-I: Introduction01:22

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.
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...
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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:
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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Inflammatory Bowel Disease V: Surgical Management01:21

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Surgical interventions for inflammatory bowel disease (IBD), which includes ulcerative colitis and Crohn's disease, are essential in managing symptoms and addressing complications. The selection of surgical procedures is contingent upon the specific conditions and complications that stem from these illnesses.
Here are some common surgical interventions for IBD:
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Subculture and Cryopreservation of Esophageal Adenocarcinoma Organoids: Pros and Cons for Single Cell Digestion
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Appendiceal adenocarcinoma: Current concepts & challenges.

Phoenix D Bell1

  • 1Department of Pathology, Cleveland Clinic, Cleveland Clinic 9500 Euclid Ave, Cleveland, OH 44195, United States.

Seminars in Diagnostic Pathology
|August 30, 2024
PubMed
Summary
This summary is machine-generated.

Appendiceal adenocarcinoma (ApAC) diagnosis is challenging due to evolving classifications, especially for mucinous subtypes. Accurate staging and classification are crucial for effective patient management and improved outcomes in this rare cancer.

Keywords:
Appendiceal adenocarcinomaAppendixMucinous adenocarcinomaPseudomyxoma peritonei

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Area of Science:

  • Gastrointestinal Pathology
  • Surgical Oncology

Background:

  • Appendiceal adenocarcinoma (ApAC) is a rare gastrointestinal malignancy, accounting for less than 1% of all such tumors.
  • Current World Health Organization classification divides ApAC into mucinous and nonmucinous subtypes, with distinct histological features and prognoses.

Purpose of the Study:

  • To review the current classification and staging of appendiceal adenocarcinoma.
  • To emphasize the diagnostic challenges associated with the mucinous subtype and peritoneal disease.

Main Methods:

  • Literature review of appendiceal adenocarcinoma classification and staging.
  • Focus on histological features of mucinous and nonmucinous ApAC.
  • Discussion of diagnostic challenges and their impact on patient management.

Main Results:

  • Nomenclature and classification of ApAC, particularly the mucinous subtype, have undergone significant changes, leading to diagnostic confusion.
  • Mucinous ApAC exhibits pools of mucin with varying cytology and infiltrative invasion.
  • Nonmucinous ApAC resembles colorectal adenocarcinoma and has a poorer prognosis.

Conclusions:

  • Accurate diagnosis of ApAC, especially the mucinous subtype, is critical due to differing treatment protocols.
  • Understanding current classification and staging is essential for optimal patient management and outcomes.
  • Peritoneal disease in ApAC presents significant challenges for surgical pathologists.