Difference between revisions of "Salivary Fistula"
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| − | ==Description== | + | == Description == |
| − | + | ||
| − | *Traumatic wound | + | A salivary fistula can result from injury to any salivary gland, but most commonly the parotid. Fistulas forming from other glands is uncommon. |
| + | |||
| + | Injury may be due to: | ||
| + | |||
| + | *Traumatic wound to the face e.g. bite wound | ||
*Abscess drainage | *Abscess drainage | ||
| − | *Iatrogenic rupture | + | *Iatrogenic rupture following prior surgery in the region |
| − | The continuous flow of saliva prevents healing. | + | *Exopthalmus is the most likely cause of zygomatic duct injury |
| − | ==Diagnosis== | + | |
| − | ===Clinical Signs=== | + | The continuous flow of saliva prevents healing and therefore a fistula develops |
| − | *Discharge from fistula (must be differentiated from a draining sinus) | + | |
| − | ==Treatment== | + | When a salivary duct injury occurs due to trauma on the face, this results in a fistula being created which will cause discharge of saliva onto the face. Discharge from the gland may be noticably worse before or during feeding.<br> |
| − | Surgical ligation of the duct or complete removal of the gland | + | |
| − | ==References== | + | == Diagnosis == |
| − | Merck & Co (2008) '''The Merck Veterinary Manual''' | + | |
| − | [[Category:Salivary_Glands_-_Pathology]][[Category:To_Do_-_Kate]] | + | === Clinical Signs === |
| − | [[Category: | + | |
| − | [[Category: | + | *Fistula visible over parotid region, or located upon clinical examination |
| + | *Discharge from fistula (must be differentiated from a draining sinus) resulting in a visibly wet face | ||
| + | *History or current presence of a wound over the parotid region<br> | ||
| + | |||
| + | Differentiation from a draining sinus by assessment of the discharge- salivary fistula will discharge a golden or blood tinged saliva, which will be viscous and 'stringy' in appearance. Mucous can be identified in this by use of periodic acid-schiff stain. | ||
| + | |||
| + | == Treatment == | ||
| + | |||
| + | Surgical ligation of the duct or complete removal of the gland is neccesary | ||
| + | |||
| + | == References == | ||
| + | |||
| + | Merck & Co (2008) '''The Merck Veterinary Manual''' | ||
| + | |||
| + | [[Category:Salivary_Glands_-_Pathology]] [[Category:To_Do_-_Kate]] [[Category:Oral_Diseases_-_Dog]] [[Category:Oral_Diseases_-_Cat]] | ||
Revision as of 16:35, 1 March 2011
Description
A salivary fistula can result from injury to any salivary gland, but most commonly the parotid. Fistulas forming from other glands is uncommon.
Injury may be due to:
- Traumatic wound to the face e.g. bite wound
- Abscess drainage
- Iatrogenic rupture following prior surgery in the region
- Exopthalmus is the most likely cause of zygomatic duct injury
The continuous flow of saliva prevents healing and therefore a fistula develops
When a salivary duct injury occurs due to trauma on the face, this results in a fistula being created which will cause discharge of saliva onto the face. Discharge from the gland may be noticably worse before or during feeding.
Diagnosis
Clinical Signs
- Fistula visible over parotid region, or located upon clinical examination
- Discharge from fistula (must be differentiated from a draining sinus) resulting in a visibly wet face
- History or current presence of a wound over the parotid region
Differentiation from a draining sinus by assessment of the discharge- salivary fistula will discharge a golden or blood tinged saliva, which will be viscous and 'stringy' in appearance. Mucous can be identified in this by use of periodic acid-schiff stain.
Treatment
Surgical ligation of the duct or complete removal of the gland is neccesary
References
Merck & Co (2008) The Merck Veterinary Manual