What is your diagnosis?

Rebecca Egan, Marisa Markey

Animal Health Laboratory, University of Guelph, Guelph, ON (Egan), Full Circle Equine Veterinary Services (Markey)

AHL Newsletter 2026;30(3):20.

Photo of skin lesion on the ventral absomen of a 16 year old Thoroughbred mare.

Skin lesion on the ventral abdomen of a 16-year-old Thoroughbred mare, just cranial to the udder. The lesion has been present as a flat thick scaly region of skin for a couple of years, and more recently developed a nodule at the edge.

Stay tuned for the answer in the December 2026 AHL Newsletter!

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