Gastrointestinal Flashcards
Cheiloschisis
Cleft lip
Palatochisis
Cleft palate
Cause of glossal atrophy in the horse..
Lingual muscle atrophy due to neuropathy of nerves running through the guttural pouch - mycosis
Pallor (mm)
Anaemia
Heart failure
Cyanosis (mm)
Blue or purple discolouration of the mucus membrane - due to low tissue oxygenation
Petechial/ ecchymotic haemorrhage (mm)
Clotting defect
Septicaemia
Intoxication
Stomatitis
Inflammation or oral mucous membranes
Gingivitis
Inflammation
- Poor oral hygiene - plaque build up
- SBI
- Gingival trauma
- Immunodeficiency - FIV
Describe this lesion
Focal area (poorly demarcated) of redenning of the gingival.
Affecting 20% of tissue, areas are soft and mildly oedema.
Chronic focal mild haemorrhagic gingivitis
Cause: poor dental hygiene
Describe this lesion
Acute multifocal severe necrotising fibrinous stomatitis
Fusobacterium necrophorum
Describe this lesion
Yellow foci spread throughout the tongue muscle.
Chronic multifocal severe pyogranulomatous glossitis
Actinobacillus lignieresi
Oribivirus causing cyanosis in livestock
Bluetongue - spread by culicoides
What is the pathogenesis of Bluetongue virus?
Causes endothelial damage and vasculitis - microthrombi formation and haemorrhage - leads to ischemic necrosis
A picornavirus causing oral vesicles in sheep and cattle.
Foot and mouth disease virus
Transmission of FMDV
Aerosol
Oropharyngeal
Pathogenesis of FMDV
Ballooning degeneration of glossal mucosal - cell detachment - oedema
Acute focal moderate fibrinous glottitis
Picornavirus causing vesicle formation in pigs.
Swine vesicular disease
Describe this lesion
Multifocal to coelescing red ulcerative lesions of the oral mucosa of the cow.
Well demarcated - irregularly shaped 2x2mm
Cause: Cytopathic mucosal disease associated with BVDV1 - pestivirus
Where can mucosal disease appear in the cow?
Oral mucosa
Glossal mucosa
Rumen
Oesophagus
Malignant catarrhal fever is what type of virus
Ovine herpes virus 1
Differentials for infectious causes of erosive stomatitis/ glossitis.
- FMD
- Mucosal disease BVD
- MCF Ovine herpes virus 1
- Bluetongue
- Fusobacterium necrophorum - calf diphtheria
- Actinobacillus lignieresi - wooden tongue
Describe this lesion.
Multifocal to coelescing irregular well demarcated flat ulcers on the palatal surface. The underlying tissue is severely reddened. Lesions are 5x1 cm at the largest.
Also seen is conjunctivitis and keratitis/ muzzle ulceration
Acute multifocal m/s ulcerative stomatitis
What feline viruses cause ulcerative/ erosive stomatitis?
Feline calicivirus
Feline herpesvirus
Ulcerative glossitis associated with FCV/ FHV
Distinguishable since FHV infection shows syncitial cells and possibly inclusion bodies on histological examination
Fungal cause of stomatitis, oral ulceration and glossitis in suckling animals and immunocompromised adults.
Candida albicans
Parasitic causes of stomatitis, oral ulceration and glossitis
Cystercercus of taenia species:
- Cellulosae - T. solium in lingual muscles
- Bovis - T. saginata
Trichinella spiralis
Potential causes of tonsilitis
Sytemic pathogens: CAV, Parvo, swine HV
Colonising bacteria: Streptococci, some coliforms - rare primary disease
What is the difference between a papilloma and epulide?
Epulides are derived from gingival connective tissue or periodontal ligaments
Papillomas are derived from oral epithelium
Describe the lesion
Malignant melanoma of the pigmented mucosa
Highly invasive - to blood and lymphnodes
Ameloblastoma
Amelocyte tumour - dental epithelium
Odontoma
Harmatoma (abnormal) benign growth of dental tissue
Sialoadenitis
Salivary gland inflammation
Sialoliths
Salivary calculi
Ranula
Cyst of the sublingual duct
Persistent 4th right aortic arch can lead to….
Oesophageal stricture and dilation of the cranial oesophagus
What sequelae can occur due to congenital oesophageal stricture?
Poor wt gain
Regurgitation
Aspiration pneumonia
Choke
Caused by oesophageal obstructure - can lead to ulceration and necrosis of the mucosa