Uveal cyst in a 5-year-old, male Labrador Retriever. Differential diagnosis between a uveal cyst and a melanoma is achieved through transillumination. A uveal cyst will become transilluminated, since it consists in an aqueous humour-filled vesicle, while a melanoma will not.

 




 
 
 
 
 

 

 
 
 
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