Endoscopic evaluation and management of large bowel disorders in dogs
By: Raji K C.
Contributor(s): Jayakumar K M (Guide).
Material type:
BookPublisher: Mannuthy Department of Clinical Veterinary Medicine, College of Veterinary and Animal Sciences 2010DDC classification: 636.0895 Online resources: Click here to access online Dissertation note: MVSc Abstract: Endoscopic evaluation of large bowel diarrhoea was conducted in 15 dogs and the clinical signs correlated with endoscopic appearance and histological findings.
Parameters studied were detailed history, clinical signs, faecal sample examination for ova of internal parasites and faecal culture, rectal cytology, haematology, serology, colonoscopy and histopathology of mucosal biopsy.
Average age of the affected animals with large bowel disorders was 2.9 years. Among dog breeds, highest incidence was found in German Shepherd followed by Doberman pincher. Male dogs were more affected by the large bowel disorders. Clinical signs specific to large bowel disorders were straining, haematochezia, excess mucus in the faeces and frequent defecation with small volume of faeces.
Rectal cytology helped to identify the type of mucosal inflammation even before doing colonoscopy, since it was always related with the histopathology result. Marked anaemia with hypoproteinaemia was detected in dogs affected with histiocytic ulcerative colitis that had grave prognosis. Mild anaemia was recognized in parasitic colitis and in most cases of chronic colitis. Gastrointestinal parasitism and dietary indiscrimination produced acute colitis in some animals. In chronic colitis even though the exact etiology was not determined the positive response to corticosteroids therapy with hypoallergenic diet indicated that a prolonged antigenic stimulation might be the inciting cause.
On colonoscopy, the mucosa was found to be hyperemic and oedematous in dogs affected with acute colitis. In chronic inflammatory conditions, colonoscopy revealed varying degrees of hyperemia, oedema, mucosal ulcers, haemorrhage and increased mucosal friability.
Histopathological changes in acute colitis were mild lymphocytic plasmacytic infiltrations with or without cryptitis, whereas chronic colitis was characterized by severe infiltration of lymphocytes, plasma cells or histiocytes.
Treatment of the inflammatory bowel disorders were based on the severity of clinical signs and degree of inflammatory infiltrates. Dietary modification was suggested in all types of large bowel disorders.
From the present study, it was inferred that colonoscopy is a valuable diagnostic tool for large bowel disorders.
| Item type | Current location | Call number | Status | Date due | Barcode |
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Theses
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KAU Central Library, Thrissur Theses | 636.0895 RAJ/EN PG (Browse shelf) | Available | 173007 |
MVSc
Endoscopic evaluation of large bowel diarrhoea was conducted in 15 dogs and the clinical signs correlated with endoscopic appearance and histological findings.
Parameters studied were detailed history, clinical signs, faecal sample examination for ova of internal parasites and faecal culture, rectal cytology, haematology, serology, colonoscopy and histopathology of mucosal biopsy.
Average age of the affected animals with large bowel disorders was 2.9 years. Among dog breeds, highest incidence was found in German Shepherd followed by Doberman pincher. Male dogs were more affected by the large bowel disorders. Clinical signs specific to large bowel disorders were straining, haematochezia, excess mucus in the faeces and frequent defecation with small volume of faeces.
Rectal cytology helped to identify the type of mucosal inflammation even before doing colonoscopy, since it was always related with the histopathology result. Marked anaemia with hypoproteinaemia was detected in dogs affected with histiocytic ulcerative colitis that had grave prognosis. Mild anaemia was recognized in parasitic colitis and in most cases of chronic colitis. Gastrointestinal parasitism and dietary indiscrimination produced acute colitis in some animals. In chronic colitis even though the exact etiology was not determined the positive response to corticosteroids therapy with hypoallergenic diet indicated that a prolonged antigenic stimulation might be the inciting cause.
On colonoscopy, the mucosa was found to be hyperemic and oedematous in dogs affected with acute colitis. In chronic inflammatory conditions, colonoscopy revealed varying degrees of hyperemia, oedema, mucosal ulcers, haemorrhage and increased mucosal friability.
Histopathological changes in acute colitis were mild lymphocytic plasmacytic infiltrations with or without cryptitis, whereas chronic colitis was characterized by severe infiltration of lymphocytes, plasma cells or histiocytes.
Treatment of the inflammatory bowel disorders were based on the severity of clinical signs and degree of inflammatory infiltrates. Dietary modification was suggested in all types of large bowel disorders.
From the present study, it was inferred that colonoscopy is a valuable diagnostic tool for large bowel disorders.
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