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Related Concept Videos

Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

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Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
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Irritable Bowel Syndrome I: Introduction01:17

Irritable Bowel Syndrome I: Introduction

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Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
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Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

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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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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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Inflammatory Bowel Disease II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

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Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
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Inflammatory Bowel Disease IV: Pharmacological Management01:29

Inflammatory Bowel Disease IV: Pharmacological Management

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Upon diagnosis, managing Inflammatory Bowel Disease (IBD) involves addressing several crucial aspects. The primary goals include resting the bowel, correcting malnutrition, and providing symptomatic relief. Resting the bowel may consist of medications to reduce inflammation and promote healing. Correcting malnutrition is essential, often requiring dietary adjustments and nutritional supplements. Symptomatic relief aims to ease pain, diarrhea, and other discomforts in IBD.
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Multimodal Optical Imaging Platform for Studying Cellular Metabolism
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Multimodality imaging of small bowel neoplasms.

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  • 1Department of Radiology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA.

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Small intestine tumors are rare but challenging to diagnose. Imaging techniques like CT and MR are crucial for identifying and differentiating these neoplasms, aiding in patient management.

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Area of Science:

  • Gastroenterology
  • Radiology
  • Oncology

Background:

  • The small intestine comprises over 90% of the alimentary tract's surface area.
  • Small bowel tumors constitute less than 5% of all gastrointestinal neoplasms.
  • Accurate identification and differentiation of small bowel tumors can be challenging despite advanced imaging.

Purpose of the Study:

  • To review the imaging characteristics of benign and malignant small bowel tumors.
  • To highlight the importance of understanding imaging features for accurate diagnosis.
  • To discuss the role of various imaging modalities in evaluating small bowel neoplasms.

Main Methods:

  • Review of cross-sectional imaging modalities including CT and MR.
  • Discussion of endoscopic evaluation for intraluminal tumors.
  • Consideration of nuclear medicine studies for extraluminal neoplasms.

Main Results:

  • CT and MR are effective for evaluating common small bowel tumors.
  • Endoscopic evaluation is more sensitive for intraluminal tumors.
  • CT, MR, and nuclear medicine studies are superior for extraluminal neoplasms.
  • Overlapping imaging features and secondary complications can complicate differentiation.

Conclusions:

  • Understanding the imaging characteristics of small bowel tumors is critical for diagnosis.
  • Choosing the appropriate imaging modality and technique is essential for accurate evaluation.
  • Differentiating normal bowel from tumor requires careful analysis of imaging findings.