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Chronic dacryocystitis with fistula, Shetland Sheepdog
chronic-dacryocystitis-with-fistula-shetland-sheepdog-hamor-sized
Chronic dacryocystitis with fistula, Shetland Sheepdog

    A fistula (arrow) has formed below this Shetland Sheepdog's eye as a result of chronic dacryocystitis.

Courtesy of K. Gelatt.