An orbital sialocele developed in a dog following enucleation for protracted glaucoma. This eye had historically been treated for keratoconjunctivitis sicca by parotid duct transposition approximately 5 years previously, and the duct was ligated distally at the time of enucleation.
One month following enucleation, the dog presented with a fluctuant conical-shaped swelling ventrolateral to the orbital socket.
Surgical exploration revealed a dilated, fibrotic distal portion of the previously transposed parotid duct, and saliva, within the enucleated orbit.
The distal portion of the duct and saliva-containing tissues from within the orbit were excised.
The remaining proximal normal portion of the parotid duct was re-routed into the oral cavity.
Clinicopathologic and histologic examination of the excised orbital contents and dilated portion of duct revealed a sterile sample of saliva and moderate chronic periductal fibrosis.
At a 6-month re-evaluation there was no evidence of recurrence of the sialocele, and the parotid duct was functional.
Source: Justin Guinan, A. Michelle Willis, Cheryl L. Cullen, Richard Walshaw (2007): Postenucleation orbital sialocele in a dog associated with prior parotid duct transposition. In: Veterinary Ophthalmology 10 (6), 386Ā389.
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