Merck Manual

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Perianal fistula, dog
Perianal fistula, dog

    Perianal region of a German Shepherd dog with perianal fistulas. Fistulous tracts of various sizes can be seen along the left and right margins of the anus. Purulent material is noted at the ventral aspect of the anus.

Courtesy of Dr. Alexander Gallagher.

In these topics
Perianal Fistula in Dogs