Six months ago, thanks to an observant horse owner who noticed something different in her horse's eye, the horse received prompt diagnosis - third eyelid squamous cell carcinoma based on histopathology - and treatment of this aggressive cancer. If the owner had delayed getting veterinary attention, the horse could have lost his eye. Fortunately only the mass was removed and the area was treated with cryotherapy.
SCC is the most common periocular tumor in horses and typically affects depigmented (pink) tissues exposed to UV light.
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