OVERVIEW
The most common primary intraocular tumor in cats
Usually arise from the anterior iridal surface with extension to the ciliary body and choroid
Tend to be flat and diffuse, not nodular (unlike intraocular melanomas in dogs)
Initially has a benign clinical and histologic appearance
Unique feature—may develop metastatic disease up to several years later
Metastasize to regional lymph nodes, numerous visceral organs (especially those in the abdominal cavity), lungs, and less commonly, the skeleton
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