Originally Posted by MangoRoX87
Are the melanomas a real health threat? Anything you do about it?
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Grey horses have a natural suppressor that lessons the chance of melanoma metasticizing, so although they have a substantially higher incidence of melanoma, most of their melanomas do not metasticize. However, for those that do metasticize, the melanoma is just as serious as it is in a non-grey horse.
In direct answer to your question, as with any cancer that metasticizes, melanoma can be fatal. In addition, even if it is a grey horse and the melanoma doesn't metasticize, it can get very nasty with secondary infections and complications - particularly as it occurs often in the genita, anal, and mouth areas...