Category:Intestine - Inflammatory Pathology
Introduction
Inflammation of the Intestines
- Inflammation involving small or large intestine is known as enteritis.
- More specific segments may be involved, for example
- Caecum - typhlitis
- Colon - colitis
- Rectum - proctitis
- More specific segments may be involved, for example
- Enteritis is extremely common, and is usually associated with diarrhoea.
- Diarrhoea is the passage of faeces with increased bulk and/or fluid content.
- However, remember that enteritis may occur without diarrhoea, and diarrhoea can occur without enteritis!
- There are very many causes of enteritis - some are outlined in this section.
- Laboratory support is usually required for a comprehensive diagnosis, but we must try to narrow the diagnostic options.
- Diagnosis is aided by noting:
- Species
- Age
- Gross distribution of lesions- i.e. upper or lower small intestine.
- The effects on the large intestine.
- The type of mucosal pathology- both grossly and histologically.
Normal Intestinal Structure
- The normal intestinal structure consists of:
- The mucosa
- In the small intestine, the epithelium forms villi and crypts.
- Epithelium is continuously renewed.
- Also has associated glands.
- In the small intestine, the epithelium forms villi and crypts.
- The lamina propria
- Supportive tissue
- The muscularis mucosae
- The submucosa
- Radial, and then longitudinal, muscle.
- The serosa.
- The mucosa
- Damage due to enteritis results in morphological changes to the normal structure, e.g.
- Villus atrophy.
- Apparent elongation of the crypts.
- Various types of inflammatory cell infiltration.
- However, the bowel may remain morphologically normal in some diarrhoeaic conditions.
- For example, in hypersecretory diarrhoea due to some bacterial toxins.
Types and Causes of Inflammation
- As with other sections of the alimentary system, there several different types of inflammation that occur in the intestines.
- Even quite mild inflammatory lesions can have quite severe effects, especially if they go on for any length of time.
- The major pathological entities are outlined below.
Inflammation - Contents
Catarrhal Enteritis
- Pathology of Catarrhal Enteritis
- Catarrhal Enteritis Caused by Parasites
- Mixed Viral Enteritis
- Bacterial Enteritis
Ulcerative Enteritis
Fibrinous/ Haemorrhagic Enteritis
- Pathology of Fibrinous/ Haemorrhagic Enteritis
- Salmonellosis
- Swine Dysentery
- Parvovirus Enteritis
- Bacterial septicaemia and enteritis
Proliferative Enteritis
Granulomatous Enteritis
- Paratuberculosis (Johnes Disease) - see under Proliferative Enteritis
- Feline Infectious Peritonitis
Inflammatory Bowel Disease And Related Conditions
- Lymphocytic - Plasmacytic Enteritis
- Eosinophilic Enteritis
- Idiopathic Eosinophilic Enteritis
- Granulomatous Enteritis
- Idiopathic colitis
- Histiocytic Ulcerative Colitis
- Lymphangiectasia
Villus Atrophy
Genetic Conditions Causing Enteritis
Protein-Losing Diseases
Subcategories
This category has the following 2 subcategories, out of 2 total.
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Pages in category "Intestine - Inflammatory Pathology"
The following 5 pages are in this category, out of 5 total.