Return to outline Intraocular tumors 1. This is a common intra-ocular tumor of dogs and cats. It is rarely reported in other animals. Most probably arise from the stroma of the ciliary body and extend into the iris. They will spread to the filtration angle, posterior chamber, sclera, and occasionally to the choroid.
Ocular melanomas are more malignant than dermal melanomas.
Feline uveal melanomas will metastasize to other parts of the body. The tumor arises from the non-pigmented inner layer of ciliary epithelium. They arise from any portion of the embryonic neuroectoderm. These metastatic tumors are usually from lung or mammary gland. Sarcomas Lymphosarcomas, hemangiosarcomas or fibrosarcomas are frequently found.