Sialolithiasis is a disease of the canine salivary gland involving calculi obstruction of the salivary gland duct.
The cause of sialolith formation is unknown, but usually develop as a result of calcium phosphate or calcium carbonate crystalization.
Clinical signs include swelling of the cheek and pain on opening of the mouth and an obvious swelling over the affected gland.
Exopthalmos is commonly reported with parotid gland involvement, leading to dorsolateral deviation of the globe and protrusion of the third eyelid.
Diagnosis is usually based on aspiration cytology, which usually reveals a mucoid substance. Culture and microscopic examination of cell content is required to exclude other causes.
Treatment usually involves cannulation of the duct and flushing teh sialolith, but paracentesis, surgical lancing of the swollen glands and sialoadenectomy may be required as ductal fibrosis commonly develops secondarily.
Sclerosing agents have been used to inject into the salivary gland (e.g.1% polidocanol).
Broad-spectrum antimicrobials are recommended.
- Veterinary Image Bank
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