ABSTRACT
To identify clinical, ultrasonographic andhistopathological features of cervical sialoceles [salivarymucoceles] in dogs. Retrospective study. Three German shepherd dog. Case records of three dogs that underwentsurgery to remove a cervical sialocele at the University ofTehran Small Animal Hospital were reviewed forsignalment, clinical signs, Ultrasonographic findings andhistopathology. The dogs were male German shepherd withaverage age of 4 years. In all dogs, the masses werelocated in the right cranioventral cervical region.Ultrasonography showed echo texture masses withaccumulation of fluid. The masses removed surgically.Macroscopically, the masses were round, relativelylabulated, and fluctuant with a thick, fibrous capsule.Microscopic examination revealed parotid sialocele inone case and mandibular sialocele in the other two cases.Coagulative necrosis in one case and secondary infectionin the other were observed. There were no recurrences ofthe masses after at least 6 month to 2 years from theoperation. Comparison of these results withstudies by other authors showed that surgical excision ofaffected salivary glands is the treatment of choice forsialocele. Histopathologically, the wall of sialocelesconsists of an outer, highly vascularized layer ofimmature connective tissue and an inner zone of looselyarranged fibroblasts. A pleocellular inflammatoryreactionis evident in the central area, which also containsmuch amorphous acidophilic or amphophilic debris